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40544413 = 721363649
BaseRepresentation
bin1001101010101…
…0100010011101
32211021212110221
42122222202131
540334410123
64005001341
71001423200
oct232524235
984255427
1040544413
1120982688
12116b3251
1385275a0
145555937
15385d25d
hex26aa89d

40544413 has 12 divisors (see below), whose sum is σ = 50792700. Its totient is φ = 32078592.

The previous prime is 40544411. The next prime is 40544431. The reversal of 40544413 is 31444504.

40544413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7112889 + 33431524 = 2667^2 + 5782^2 .

It is not a de Polignac number, because 40544413 - 21 = 40544411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40544411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31188 + ... + 32461.

It is an arithmetic number, because the mean of its divisors is an integer number (4232725).

Almost surely, 240544413 is an apocalyptic number.

It is an amenable number.

40544413 is a deficient number, since it is larger than the sum of its proper divisors (10248287).

40544413 is a wasteful number, since it uses less digits than its factorization.

40544413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63676 (or 63669 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 40544413 is about 6367.4494893953. The cubic root of 40544413 is about 343.5397582497.

Adding to 40544413 its reverse (31444504), we get a palindrome (71988917).

Subtracting from 40544413 its reverse (31444504), we obtain a palindrome (9099909).

The spelling of 40544413 in words is "forty million, five hundred forty-four thousand, four hundred thirteen".

Divisors: 1 7 13 49 91 637 63649 445543 827437 3118801 5792059 40544413