391930935361 has 16 divisors (see below), whose sum is σ = 455317072128. Its totient is φ = 330395083200.

The previous prime is 391930935301. The next prime is 391930935397. The reversal of 391930935361 is 163539039193.

It is not a de Polignac number, because 391930935361 - 2²⁷ = 391796717633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 391930935299 and 391930935308.

It is not an unprimeable number, because it can be changed into a prime (391930935301) 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, 3970596 + ... + 4068106.

It is an arithmetic number, because the mean of its divisors is an integer number (28457317008).

Almost surely, 2^391930935361 is an apocalyptic number.

It is an amenable number.

391930935361 is a deficient number, since it is larger than the sum of its proper divisors (63386136767).

391930935361 is an equidigital number, since it uses as much as digits as its factorization.

391930935361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106992.

The product of its (nonzero) digits is 1771470, while the sum is 52.

The spelling of 391930935361 in words is "three hundred ninety-one billion, nine hundred thirty million, nine hundred thirty-five thousand, three hundred sixty-one".