109905881 has 16 divisors (see below), whose sum is σ = 116717568. Its totient is φ = 103334400.

The previous prime is 109905869. The next prime is 109905883. The reversal of 109905881 is 188509901.

It is a cyclic number.

It is not a de Polignac number, because 109905881 - 2²⁶ = 42797017 is a prime.

It is a super-2 number, since 2×109905881² = 24158605356772322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109905883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 350981 + ... + 351293.

It is an arithmetic number, because the mean of its divisors is an integer number (7294848).

Almost surely, 2^109905881 is an apocalyptic number.

It is an amenable number.

109905881 is a deficient number, since it is larger than the sum of its proper divisors (6811687).

109905881 is a wasteful number, since it uses less digits than its factorization.

109905881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632.

The product of its (nonzero) digits is 25920, while the sum is 41.

The square root of 109905881 is about 10483.6005742302. The cubic root of 109905881 is about 479.0052910621.

The spelling of 109905881 in words is "one hundred nine million, nine hundred five thousand, eight hundred eighty-one".