39959860257 has 6 divisors (see below), whose sum is σ = 57719798162. Its totient is φ = 26639906832.

The previous prime is 39959860247. The next prime is 39959860301. The reversal of 39959860257 is 75206895993.

39959860257 is a `hidden beast` number, since 39 + 9 + 598 + 6 + 0 + 2 + 5 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 28131340176 + 11828520081 = 167724^2 + 108759^2 .

It is not a de Polignac number, because 39959860257 - 2⁸ = 39959860001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39959860194 and 39959860203.

It is not an unprimeable number, because it can be changed into a prime (39959860207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2219992228 + ... + 2219992245.

Almost surely, 2^39959860257 is an apocalyptic number.

It is an amenable number.

39959860257 is a deficient number, since it is larger than the sum of its proper divisors (17759937905).

39959860257 is a wasteful number, since it uses less digits than its factorization.

39959860257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4439984479 (or 4439984476 counting only the distinct ones).

The product of its (nonzero) digits is 36741600, while the sum is 63.

The spelling of 39959860257 in words is "thirty-nine billion, nine hundred fifty-nine million, eight hundred sixty thousand, two hundred fifty-seven".