109921604 has 24 divisors (see below), whose sum is σ = 207616920. Its totient is φ = 50621184.

The previous prime is 109921601. The next prime is 109921667. The reversal of 109921604 is 406129901.

It can be written as a sum of positive squares in 4 ways, for example, as 91204 + 109830400 = 302^2 + 10480^2 .

It is not an unprimeable number, because it can be changed into a prime (109921601) by changing a digit.

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, 24392 + ... + 28544.

It is an arithmetic number, because the mean of its divisors is an integer number (8650705).

Almost surely, 2^109921604 is an apocalyptic number.

It is an amenable number.

109921604 is a deficient number, since it is larger than the sum of its proper divisors (97695316).

109921604 is a wasteful number, since it uses less digits than its factorization.

109921604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4679 (or 4677 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 109921604 is about 10484.3504329071. The cubic root of 109921604 is about 479.0281319420.

The spelling of 109921604 in words is "one hundred nine million, nine hundred twenty-one thousand, six hundred four".