111672089 has 2 divisors, whose sum is σ = 111672090. Its totient is φ = 111672088.

The previous prime is 111672053. The next prime is 111672091. The reversal of 111672089 is 980276111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87984400 + 23687689 = 9380^2 + 4867^2 .

It is a cyclic number.

It is not a de Polignac number, because 111672089 - 2¹⁶ = 111606553 is a prime.

Together with 111672091, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111672389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55836044 + 55836045.

It is an arithmetic number, because the mean of its divisors is an integer number (55836045).

Almost surely, 2^111672089 is an apocalyptic number.

It is an amenable number.

111672089 is a deficient number, since it is larger than the sum of its proper divisors (1).

111672089 is an equidigital number, since it uses as much as digits as its factorization.

111672089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 35.

The square root of 111672089 is about 10567.5015495622. The cubic root of 111672089 is about 481.5575690834.

The spelling of 111672089 in words is "one hundred eleven million, six hundred seventy-two thousand, eighty-nine".