399835095264 has 480 divisors, whose sum is σ = 1300788720000. Its totient is φ = 119477928960.

The previous prime is 399835095259. The next prime is 399835095301. The reversal of 399835095264 is 462590538993.

399835095264 is a `hidden beast` number, since 39 + 98 + 3 + 509 + 5 + 2 + 6 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 801272487 + ... + 801272985.

It is an arithmetic number, because the mean of its divisors is an integer number (2709976500).

Almost surely, 2^399835095264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 399835095264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (650394360000).

399835095264 is an abundant number, since it is smaller than the sum of its proper divisors (900953624736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399835095264 is a wasteful number, since it uses less digits than its factorization.

399835095264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868 (or 851 counting only the distinct ones).

The product of its (nonzero) digits is 62985600, while the sum is 63.

The spelling of 399835095264 in words is "three hundred ninety-nine billion, eight hundred thirty-five million, ninety-five thousand, two hundred sixty-four".