399901934884 has 9 divisors (see below), whose sum is σ = 699830599377. Its totient is φ = 199950335064.

The previous prime is 399901934869. The next prime is 399901934899. The reversal of 399901934884 is 488439109993.

The square root of 399901934884 is 632378.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (399901934869) and next prime (399901934899).

It can be written as a sum of positive squares in only one way, i.e., 333647174884 + 66254760000 = 577622^2 + 257400^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1106662 + ... + 1422850.

Almost surely, 2^399901934884 is an apocalyptic number.

399901934884 is the 632378-th square number.

It is an amenable number.

399901934884 is a deficient number, since it is larger than the sum of its proper divisors (299928664493).

399901934884 is an frugal number, since it uses more digits than its factorization.

399901934884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632382 (or 316191 counting only the distinct ones).

The product of its (nonzero) digits is 60466176, while the sum is 67.

The spelling of 399901934884 in words is "three hundred ninety-nine billion, nine hundred one million, nine hundred thirty-four thousand, eight hundred eighty-four".