111979149 has 8 divisors (see below), whose sum is σ = 149446752. Its totient is φ = 74582160.

The previous prime is 111979129. The next prime is 111979169. The reversal of 111979149 is 941979111.

It is an interprime number because it is at equal distance from previous prime (111979129) and next prime (111979169).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111979149 - 2⁵ = 111979117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111979149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111979129) 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, 13834 + ... + 20379.

It is an arithmetic number, because the mean of its divisors is an integer number (18680844).

Almost surely, 2^111979149 is an apocalyptic number.

It is an amenable number.

111979149 is a deficient number, since it is larger than the sum of its proper divisors (37467603).

111979149 is a wasteful number, since it uses less digits than its factorization.

111979149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35307.

The product of its digits is 20412, while the sum is 42.

The square root of 111979149 is about 10582.0200812510. The cubic root of 111979149 is about 481.9985379569.

The spelling of 111979149 in words is "one hundred eleven million, nine hundred seventy-nine thousand, one hundred forty-nine".