109879155 has 12 divisors (see below), whose sum is σ = 190457280. Its totient is φ = 58602192.

The previous prime is 109879151. The next prime is 109879169. The reversal of 109879155 is 551978901.

It is not a de Polignac number, because 109879155 - 2² = 109879151 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 2441759 = 109879155 / (1 + 0 + 9 + 8 + 7 + 9 + 1 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 109879155.

It is not an unprimeable number, because it can be changed into a prime (109879151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1220835 + ... + 1220924.

It is an arithmetic number, because the mean of its divisors is an integer number (15871440).

Almost surely, 2^109879155 is an apocalyptic number.

109879155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

109879155 is a deficient number, since it is larger than the sum of its proper divisors (80578125).

109879155 is a wasteful number, since it uses less digits than its factorization.

109879155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2441770 (or 2441767 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 45.

The square root of 109879155 is about 10482.3258392401. The cubic root of 109879155 is about 478.9664610708.

The spelling of 109879155 in words is "one hundred nine million, eight hundred seventy-nine thousand, one hundred fifty-five".