109904 has 10 divisors (see below), whose sum is σ = 212970. Its totient is φ = 54944.

The previous prime is 109903. The next prime is 109913. The reversal of 109904 is 409901.

It can be written as a sum of positive squares in only one way, i.e., 61504 + 48400 = 248^2 + 220^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 109904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3419 + ... + 3450.

It is an arithmetic number, because the mean of its divisors is an integer number (21297).

2¹⁰⁹⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

109904 is a deficient number, since it is larger than the sum of its proper divisors (103066).

109904 is an equidigital number, since it uses as much as digits as its factorization.

109904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6877 (or 6871 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 109904 is about 331.5177219999. The cubic root of 109904 is about 47.9002558378.

The spelling of 109904 in words is "one hundred nine thousand, nine hundred four".