111190889 has 2 divisors, whose sum is σ = 111190890. Its totient is φ = 111190888.

The previous prime is 111190837. The next prime is 111190909. The reversal of 111190889 is 988091111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86638864 + 24552025 = 9308^2 + 4955^2 .

It is a cyclic number.

It is not a de Polignac number, because 111190889 - 2²⁰ = 110142313 is a prime.

It is a super-2 number, since 2×111190889² = 24726827593220642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111190589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55595444 + 55595445.

It is an arithmetic number, because the mean of its divisors is an integer number (55595445).

Almost surely, 2^111190889 is an apocalyptic number.

It is an amenable number.

111190889 is a deficient number, since it is larger than the sum of its proper divisors (1).

111190889 is an equidigital number, since it uses as much as digits as its factorization.

111190889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 38.

The square root of 111190889 is about 10544.7090524111. The cubic root of 111190889 is about 480.8648888684.

The spelling of 111190889 in words is "one hundred eleven million, one hundred ninety thousand, eight hundred eighty-nine".