109912885 has 4 divisors (see below), whose sum is σ = 131895468. Its totient is φ = 87930304.

The previous prime is 109912879. The next prime is 109912889. The reversal of 109912885 is 588219901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13853284 + 96059601 = 3722^2 + 9801^2 .

It is a cyclic number.

It is not a de Polignac number, because 109912885 - 2³ = 109912877 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 (109912889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10991284 + ... + 10991293.

It is an arithmetic number, because the mean of its divisors is an integer number (32973867).

Almost surely, 2^109912885 is an apocalyptic number.

It is an amenable number.

109912885 is a deficient number, since it is larger than the sum of its proper divisors (21982583).

109912885 is an equidigital number, since it uses as much as digits as its factorization.

109912885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21982582.

The product of its (nonzero) digits is 51840, while the sum is 43.

The square root of 109912885 is about 10483.9346144470. The cubic root of 109912885 is about 479.0154660766.

The spelling of 109912885 in words is "one hundred nine million, nine hundred twelve thousand, eight hundred eighty-five".