398929350644 has 24 divisors (see below), whose sum is σ = 761631973536. Its totient is φ = 181322100000.

The previous prime is 398929350593. The next prime is 398929350653. The reversal of 398929350644 is 446053929893.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 658919 + ... + 1109969.

It is an arithmetic number, because the mean of its divisors is an integer number (31734665564).

Almost surely, 2^398929350644 is an apocalyptic number.

It is an amenable number.

398929350644 is a deficient number, since it is larger than the sum of its proper divisors (362702622892).

398929350644 is a wasteful number, since it uses less digits than its factorization.

398929350644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471167 (or 471165 counting only the distinct ones).

The product of its (nonzero) digits is 50388480, while the sum is 62.

The spelling of 398929350644 in words is "three hundred ninety-eight billion, nine hundred twenty-nine million, three hundred fifty thousand, six hundred forty-four".