111672389 has 2 divisors, whose sum is σ = 111672390. Its totient is φ = 111672388.

The previous prime is 111672361. The next prime is 111672403. The reversal of 111672389 is 983276111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57532225 + 54140164 = 7585^2 + 7358^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111672389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111672349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55836194 + 55836195.

It is an arithmetic number, because the mean of its divisors is an integer number (55836195).

Almost surely, 2^111672389 is an apocalyptic number.

It is an amenable number.

111672389 is a deficient number, since it is larger than the sum of its proper divisors (1).

111672389 is an equidigital number, since it uses as much as digits as its factorization.

111672389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 38.

The square root of 111672389 is about 10567.5157440148. The cubic root of 111672389 is about 481.5580003076.

The spelling of 111672389 in words is "one hundred eleven million, six hundred seventy-two thousand, three hundred eighty-nine".