399791064652 has 24 divisors (see below), whose sum is σ = 809703426560. Its totient is φ = 169170178320.

The previous prime is 399791064613. The next prime is 399791064661. The reversal of 399791064652 is 256460197993.

It is a super-2 number, since 2×399791064652² (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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90366474 + ... + 90370897.

Almost surely, 2^399791064652 is an apocalyptic number.

It is an amenable number.

399791064652 is an abundant number, since it is smaller than the sum of its proper divisors (409912361908).

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

399791064652 is a wasteful number, since it uses less digits than its factorization.

399791064652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180737461 (or 180737459 counting only the distinct ones).

The product of its (nonzero) digits is 22044960, while the sum is 61.

The spelling of 399791064652 in words is "three hundred ninety-nine billion, seven hundred ninety-one million, sixty-four thousand, six hundred fifty-two".