391107116 has 12 divisors (see below), whose sum is σ = 699000288. Its totient is φ = 191392752.

The previous prime is 391107113. The next prime is 391107127. The reversal of 391107116 is 611701193.

It is not an unprimeable number, because it can be changed into a prime (391107113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1039991 + ... + 1040366.

It is an arithmetic number, because the mean of its divisors is an integer number (58250024).

Almost surely, 2^391107116 is an apocalyptic number.

It is an amenable number.

391107116 is a deficient number, since it is larger than the sum of its proper divisors (307893172).

391107116 is a wasteful number, since it uses less digits than its factorization.

391107116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080408 (or 2080406 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 391107116 is about 19776.4282922878. The cubic root of 391107116 is about 731.3050502691.

The spelling of 391107116 in words is "three hundred ninety-one million, one hundred seven thousand, one hundred sixteen".