111627979 has 2 divisors, whose sum is σ = 111627980. Its totient is φ = 111627978.

The previous prime is 111627959. The next prime is 111628009. The reversal of 111627979 is 979726111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111627979 - 2¹⁷ = 111496907 is a prime.

It is not a weakly prime, because it can be changed into another prime (111627959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55813989 + 55813990.

It is an arithmetic number, because the mean of its divisors is an integer number (55813990).

Almost surely, 2^111627979 is an apocalyptic number.

111627979 is a deficient number, since it is larger than the sum of its proper divisors (1).

111627979 is an equidigital number, since it uses as much as digits as its factorization.

111627979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47628, while the sum is 43.

The square root of 111627979 is about 10565.4142843525. The cubic root of 111627979 is about 481.4941563364.

The spelling of 111627979 in words is "one hundred eleven million, six hundred twenty-seven thousand, nine hundred seventy-nine".