399342409292 has 12 divisors (see below), whose sum is σ = 698853657600. Its totient is φ = 199669935696.

The previous prime is 399342409223. The next prime is 399342409321. The reversal of 399342409292 is 292904243993.

It is a happy number.

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, 982709 + ... + 1328307.

It is an arithmetic number, because the mean of its divisors is an integer number (58237804800).

Almost surely, 2^399342409292 is an apocalyptic number.

It is an amenable number.

399342409292 is a deficient number, since it is larger than the sum of its proper divisors (299511248308).

399342409292 is a wasteful number, since it uses less digits than its factorization.

399342409292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634480 (or 634478 counting only the distinct ones).

The product of its (nonzero) digits is 7558272, while the sum is 56.

The spelling of 399342409292 in words is "three hundred ninety-nine billion, three hundred forty-two million, four hundred nine thousand, two hundred ninety-two".