109159923 has 4 divisors (see below), whose sum is σ = 145546568. Its totient is φ = 72773280.

The previous prime is 109159877. The next prime is 109159943. The reversal of 109159923 is 329951901.

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

It is not a de Polignac number, because 109159923 - 2⁸ = 109159667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109159943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18193318 + ... + 18193323.

It is an arithmetic number, because the mean of its divisors is an integer number (36386642).

Almost surely, 2^109159923 is an apocalyptic number.

109159923 is a deficient number, since it is larger than the sum of its proper divisors (36386645).

109159923 is an equidigital number, since it uses as much as digits as its factorization.

109159923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36386644.

The product of its (nonzero) digits is 21870, while the sum is 39.

The square root of 109159923 is about 10447.9626243589. The cubic root of 109159923 is about 477.9191214268.

The spelling of 109159923 in words is "one hundred nine million, one hundred fifty-nine thousand, nine hundred twenty-three".