399433072895 has 32 divisors (see below), whose sum is σ = 486781747200. Its totient is φ = 314605741824.

The previous prime is 399433072891. The next prime is 399433072949. The reversal of 399433072895 is 598270334993.

It is a cyclic number.

It is not a de Polignac number, because 399433072895 - 2² = 399433072891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399433072891) 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, 111478274 + ... + 111481856.

It is an arithmetic number, because the mean of its divisors is an integer number (15211929600).

Almost surely, 2^399433072895 is an apocalyptic number.

399433072895 is a deficient number, since it is larger than the sum of its proper divisors (87348674305).

399433072895 is a wasteful number, since it uses less digits than its factorization.

399433072895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4679.

The product of its (nonzero) digits is 44089920, while the sum is 62.

The spelling of 399433072895 in words is "three hundred ninety-nine billion, four hundred thirty-three million, seventy-two thousand, eight hundred ninety-five".