40354605 has 40 divisors (see below), whose sum is σ = 74322072. Its totient is φ = 20932992.

The previous prime is 40354553. The next prime is 40354621. The reversal of 40354605 is 50645304.

40354605 is a `hidden beast` number, since 4 + 0 + 3 + 54 + 605 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9418761 + 30935844 = 3069^2 + 5562^2 .

It is not a de Polignac number, because 40354605 - 2⁶ = 40354541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 13639 + ... + 16331.

Almost surely, 2^40354605 is an apocalyptic number.

40354605 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40354605 is a deficient number, since it is larger than the sum of its proper divisors (33967467).

40354605 is a wasteful number, since it uses less digits than its factorization.

40354605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2747 (or 2738 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 40354605 is about 6352.5274497636. The cubic root of 40354605 is about 343.0028275967.

Adding to 40354605 its reverse (50645304), we get a palindrome (90999909).

The spelling of 40354605 in words is "forty million, three hundred fifty-four thousand, six hundred five".