111499997 has 4 divisors (see below), whose sum is σ = 127428576. Its totient is φ = 95571420.

The previous prime is 111499967. The next prime is 111500003. The reversal of 111499997 is 799994111.

It is a happy number.

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.

It is not a de Polignac number, because 111499997 - 2¹⁸ = 111237853 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 (111499967) 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, 7964279 + ... + 7964292.

It is an arithmetic number, because the mean of its divisors is an integer number (31857144).

Almost surely, 2^111499997 is an apocalyptic number.

It is an amenable number.

111499997 is a deficient number, since it is larger than the sum of its proper divisors (15928579).

111499997 is an equidigital number, since it uses as much as digits as its factorization.

111499997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15928578.

The product of its digits is 183708, while the sum is 50.

The square root of 111499997 is about 10559.3558989173. The cubic root of 111499997 is about 481.3100742008.

The spelling of 111499997 in words is "one hundred eleven million, four hundred ninety-nine thousand, nine hundred ninety-seven".