111491927 has 4 divisors (see below), whose sum is σ = 111637680. Its totient is φ = 111346176.

The previous prime is 111491911. The next prime is 111491959. The reversal of 111491927 is 729194111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111491927 - 2⁴ = 111491911 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 (111491977) 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, 71723 + ... + 73260.

It is an arithmetic number, because the mean of its divisors is an integer number (27909420).

Almost surely, 2^111491927 is an apocalyptic number.

111491927 is a deficient number, since it is larger than the sum of its proper divisors (145753).

111491927 is an equidigital number, since it uses as much as digits as its factorization.

111491927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145752.

The product of its digits is 4536, while the sum is 35.

The square root of 111491927 is about 10558.9737664226. The cubic root of 111491927 is about 481.2984620450.

The spelling of 111491927 in words is "one hundred eleven million, four hundred ninety-one thousand, nine hundred twenty-seven".