399499756096 has 56 divisors (see below), whose sum is σ = 906706092096. Its totient is φ = 171082329600.

The previous prime is 399499756081. The next prime is 399499756151. The reversal of 399499756096 is 690657994993.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×399499756096² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240135 + ... + 925561.

It is an arithmetic number, because the mean of its divisors is an integer number (16191180216).

Almost surely, 2^399499756096 is an apocalyptic number.

It is an amenable number.

399499756096 is an abundant number, since it is smaller than the sum of its proper divisors (507206336000).

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

399499756096 is a wasteful number, since it uses less digits than its factorization.

399499756096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686747 (or 686737 counting only the distinct ones).

The product of its (nonzero) digits is 892820880, while the sum is 76.

The spelling of 399499756096 in words is "three hundred ninety-nine billion, four hundred ninety-nine million, seven hundred fifty-six thousand, ninety-six".