399497938412 has 6 divisors (see below), whose sum is σ = 699121392228. Its totient is φ = 199748969204.

The previous prime is 399497938397. The next prime is 399497938421. The reversal of 399497938412 is 214839794993.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49937242298 + ... + 49937242305.

It is an arithmetic number, because the mean of its divisors is an integer number (116520232038).

Almost surely, 2^399497938412 is an apocalyptic number.

It is an amenable number.

399497938412 is a deficient number, since it is larger than the sum of its proper divisors (299623453816).

399497938412 is a wasteful number, since it uses less digits than its factorization.

399497938412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99874484607 (or 99874484605 counting only the distinct ones).

The product of its digits is 105815808, while the sum is 68.

The spelling of 399497938412 in words is "three hundred ninety-nine billion, four hundred ninety-seven million, nine hundred thirty-eight thousand, four hundred twelve".