399240056732 has 48 divisors (see below), whose sum is σ = 793759932000. Its totient is φ = 174039048960.

The previous prime is 399240056731. The next prime is 399240056767. The reversal of 399240056732 is 237650042993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399240056731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 859823 + ... + 1240070.

It is an arithmetic number, because the mean of its divisors is an integer number (16536665250).

Almost surely, 2^399240056732 is an apocalyptic number.

It is an amenable number.

399240056732 is a deficient number, since it is larger than the sum of its proper divisors (394519875268).

399240056732 is a wasteful number, since it uses less digits than its factorization.

399240056732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100086 (or 2100084 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 50.

The spelling of 399240056732 in words is "three hundred ninety-nine billion, two hundred forty million, fifty-six thousand, seven hundred thirty-two".