391313962 has 8 divisors (see below), whose sum is σ = 632122596. Its totient is φ = 180606432.

The previous prime is 391313941. The next prime is 391313981. The reversal of 391313962 is 269313193.

It can be written as a sum of positive squares in 2 ways, for example, as 356492161 + 34821801 = 18881^2 + 5901^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×391313962² = 306253233712274888, which contains 22 as substring.

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, 7525243 + ... + 7525294.

Almost surely, 2^391313962 is an apocalyptic number.

391313962 is a deficient number, since it is larger than the sum of its proper divisors (240808634).

391313962 is a wasteful number, since it uses less digits than its factorization.

391313962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15050552.

The product of its digits is 26244, while the sum is 37.

The square root of 391313962 is about 19781.6572106586. The cubic root of 391313962 is about 731.4339500504.

The spelling of 391313962 in words is "three hundred ninety-one million, three hundred thirteen thousand, nine hundred sixty-two".