391304920000 has 70 divisors (see below), whose sum is σ = 970309126688. Its totient is φ = 156521952000.

The previous prime is 391304919949. The next prime is 391304920001. The reversal of 391304920000 is 29403193.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391304920001) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4851312 + ... + 4931311.

Almost surely, 2^391304920000 is an apocalyptic number.

It is an amenable number.

391304920000 is an abundant number, since it is smaller than the sum of its proper divisors (579004206688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

391304920000 is an frugal number, since it uses more digits than its factorization.

391304920000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9782655 (or 9782630 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 31.

The spelling of 391304920000 in words is "three hundred ninety-one billion, three hundred four million, nine hundred twenty thousand".