100904 has 8 divisors (see below), whose sum is σ = 189210. Its totient is φ = 50448.

The previous prime is 100853. The next prime is 100907. The reversal of 100904 is 409001.

It can be written as a sum of positive squares in only one way, i.e., 88804 + 12100 = 298^2 + 110^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (100907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6299 + ... + 6314.

2¹⁰⁰⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

100904 is a deficient number, since it is larger than the sum of its proper divisors (88306).

100904 is a wasteful number, since it uses less digits than its factorization.

100904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12619 (or 12615 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 100904 is about 317.6538997085. The cubic root of 100904 is about 46.5553355191. Note that the first 3 decimals are identical.

Adding to 100904 its reverse (409001), we get a palindrome (509905).

The spelling of 100904 in words is "one hundred thousand, nine hundred four".