111389957 has 8 divisors (see below), whose sum is σ = 131692800. Its totient is φ = 92184624.

The previous prime is 111389939. The next prime is 111389969. The reversal of 111389957 is 759983111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111389957 - 2⁸ = 111389701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111389917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274157 + ... + 274562.

It is an arithmetic number, because the mean of its divisors is an integer number (16461600).

Almost surely, 2^111389957 is an apocalyptic number.

It is an amenable number.

111389957 is a deficient number, since it is larger than the sum of its proper divisors (20302843).

111389957 is an equidigital number, since it uses as much as digits as its factorization.

111389957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548755.

The product of its digits is 68040, while the sum is 44.

The square root of 111389957 is about 10554.1440676163. The cubic root of 111389957 is about 481.1516861744.

The spelling of 111389957 in words is "one hundred eleven million, three hundred eighty-nine thousand, nine hundred fifty-seven".