111974397 has 4 divisors (see below), whose sum is σ = 149299200. Its totient is φ = 74649596.

The previous prime is 111974377. The next prime is 111974399. The reversal of 111974397 is 793479111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 793479111 = 3 ⋅264493037.

It is a cyclic number.

It is not a de Polignac number, because 111974397 - 2²³ = 103585789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111974399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18662397 + ... + 18662402.

It is an arithmetic number, because the mean of its divisors is an integer number (37324800).

Almost surely, 2^111974397 is an apocalyptic number.

It is an amenable number.

111974397 is a deficient number, since it is larger than the sum of its proper divisors (37324803).

111974397 is an equidigital number, since it uses as much as digits as its factorization.

111974397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37324802.

The product of its digits is 47628, while the sum is 42.

The square root of 111974397 is about 10581.7955470704. The cubic root of 111974397 is about 481.9917197547.

The spelling of 111974397 in words is "one hundred eleven million, nine hundred seventy-four thousand, three hundred ninety-seven".