399674823361 has 32 divisors (see below), whose sum is σ = 475767198720. Its totient is φ = 331783646400.

The previous prime is 399674823337. The next prime is 399674823371. The reversal of 399674823361 is 163328476993.

It is a cyclic number.

It is not a de Polignac number, because 399674823361 - 2⁵ = 399674823329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 399674823361.

It is not an unprimeable number, because it can be changed into a prime (399674823371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 585916 + ... + 1068946.

It is an arithmetic number, because the mean of its divisors is an integer number (14867724960).

Almost surely, 2^399674823361 is an apocalyptic number.

It is an amenable number.

399674823361 is a deficient number, since it is larger than the sum of its proper divisors (76092375359).

399674823361 is a wasteful number, since it uses less digits than its factorization.

399674823361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483205.

The product of its digits is 35271936, while the sum is 61.

The spelling of 399674823361 in words is "three hundred ninety-nine billion, six hundred seventy-four million, eight hundred twenty-three thousand, three hundred sixty-one".