399717934057 has 8 divisors (see below), whose sum is σ = 453121544960. Its totient is φ = 349550905680.

The previous prime is 399717934027. The next prime is 399717934061. The reversal of 399717934057 is 750439717993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 399717934057 - 2²³ = 399709545449 is a prime.

It is the 632233-rd Hogben number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 399717934057.

It is not an unprimeable number, because it can be changed into a prime (399717934027) by changing a digit.

It is a nontrivial repunit in base 632232.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 809145369 + ... + 809145862.

It is an arithmetic number, because the mean of its divisors is an integer number (56640193120).

Almost surely, 2^399717934057 is an apocalyptic number.

It is an amenable number.

399717934057 is a deficient number, since it is larger than the sum of its proper divisors (53403610903).

399717934057 is a wasteful number, since it uses less digits than its factorization.

399717934057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618291263.

The product of its (nonzero) digits is 45008460, while the sum is 64.

The spelling of 399717934057 in words is "three hundred ninety-nine billion, seven hundred seventeen million, nine hundred thirty-four thousand, fifty-seven".