111879898 has 16 divisors (see below), whose sum is σ = 185138856. Its totient is φ = 50376960.

The previous prime is 111879893. The next prime is 111879913. The reversal of 111879898 is 898978111.

It can be written as a sum of positive squares in 4 ways, for example, as 30393169 + 81486729 = 5513^2 + 9027^2 .

It is a super-2 number, since 2×111879898² = 25034223152980808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111879893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51411 + ... + 53542.

Almost surely, 2^111879898 is an apocalyptic number.

111879898 is a deficient number, since it is larger than the sum of its proper divisors (73258958).

111879898 is a wasteful number, since it uses less digits than its factorization.

111879898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105009.

The product of its digits is 290304, while the sum is 52.

The square root of 111879898 is about 10577.3294361100. The cubic root of 111879898 is about 481.8560918616.

The spelling of 111879898 in words is "one hundred eleven million, eight hundred seventy-nine thousand, eight hundred ninety-eight".