109155992 has 32 divisors (see below), whose sum is σ = 225054720. Its totient is φ = 49220640.

The previous prime is 109155967. The next prime is 109156009. The reversal of 109155992 is 299551901.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6293 + ... + 16059.

It is an arithmetic number, because the mean of its divisors is an integer number (7032960).

Almost surely, 2^109155992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109155992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112527360).

109155992 is an abundant number, since it is smaller than the sum of its proper divisors (115898728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

109155992 is a wasteful number, since it uses less digits than its factorization.

109155992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9911 (or 9907 counting only the distinct ones).

The product of its (nonzero) digits is 36450, while the sum is 41.

The square root of 109155992 is about 10447.7744998636. The cubic root of 109155992 is about 477.9133845148.

The spelling of 109155992 in words is "one hundred nine million, one hundred fifty-five thousand, nine hundred ninety-two".