40285549 has 2 divisors, whose sum is σ = 40285550. Its totient is φ = 40285548.

The previous prime is 40285547. The next prime is 40285571. The reversal of 40285549 is 94558204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32695524 + 7590025 = 5718^2 + 2755^2 .

It is a cyclic number.

It is not a de Polignac number, because 40285549 - 2¹ = 40285547 is a prime.

Together with 40285547, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40285547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20142774 + 20142775.

It is an arithmetic number, because the mean of its divisors is an integer number (20142775).

Almost surely, 2^40285549 is an apocalyptic number.

It is an amenable number.

40285549 is a deficient number, since it is larger than the sum of its proper divisors (1).

40285549 is an equidigital number, since it uses as much as digits as its factorization.

40285549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 40285549 is about 6347.0898055723. The cubic root of 40285549 is about 342.8070636760.

The spelling of 40285549 in words is "forty million, two hundred eighty-five thousand, five hundred forty-nine".