399848697256 has 16 divisors (see below), whose sum is σ = 749731945140. Its totient is φ = 199920178560.

The previous prime is 399848697247. The next prime is 399848697317. The reversal of 399848697256 is 652796848993.

It can be written as a sum of positive squares in 2 ways, for example, as 319778940100 + 80069757156 = 565490^2 + 282966^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93055 + ... + 899086.

Almost surely, 2^399848697256 is an apocalyptic number.

It is an amenable number.

399848697256 is a deficient number, since it is larger than the sum of its proper divisors (349883247884).

399848697256 is a wasteful number, since it uses less digits than its factorization.

399848697256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042524 (or 1042520 counting only the distinct ones).

The product of its digits is 1410877440, while the sum is 76.

The spelling of 399848697256 in words is "three hundred ninety-nine billion, eight hundred forty-eight million, six hundred ninety-seven thousand, two hundred fifty-six".