111998249 has 4 divisors (see below), whose sum is σ = 122179920. Its totient is φ = 101816580.

The previous prime is 111998231. The next prime is 111998251. The reversal of 111998249 is 942899111.

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 a cyclic number.

It is not a de Polignac number, because 111998249 - 2²⁰ = 110949673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111998219) 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, 5090819 + ... + 5090840.

It is an arithmetic number, because the mean of its divisors is an integer number (30544980).

Almost surely, 2^111998249 is an apocalyptic number.

It is an amenable number.

111998249 is a deficient number, since it is larger than the sum of its proper divisors (10181671).

111998249 is a wasteful number, since it uses less digits than its factorization.

111998249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10181670.

The product of its digits is 46656, while the sum is 44.

The square root of 111998249 is about 10582.9225169610. The cubic root of 111998249 is about 482.0259408225.

The spelling of 111998249 in words is "one hundred eleven million, nine hundred ninety-eight thousand, two hundred forty-nine".