111407977 has 2 divisors, whose sum is σ = 111407978. Its totient is φ = 111407976.

The previous prime is 111407957. The next prime is 111407983. The reversal of 111407977 is 779704111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55890576 + 55517401 = 7476^2 + 7451^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111407977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111407957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55703988 + 55703989.

It is an arithmetic number, because the mean of its divisors is an integer number (55703989).

Almost surely, 2^111407977 is an apocalyptic number.

It is an amenable number.

111407977 is a deficient number, since it is larger than the sum of its proper divisors (1).

111407977 is an equidigital number, since it uses as much as digits as its factorization.

111407977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12348, while the sum is 37.

The square root of 111407977 is about 10554.9977261959. The cubic root of 111407977 is about 481.1776307212.

The spelling of 111407977 in words is "one hundred eleven million, four hundred seven thousand, nine hundred seventy-seven".