900808 has 8 divisors (see below), whose sum is σ = 1689030. Its totient is φ = 450400.

The previous prime is 900803. The next prime is 900817. The reversal of 900808 is 808009.

It can be written as a sum of positive squares in only one way, i.e., 708964 + 191844 = 842^2 + 438^2 .

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

It is a super-2 number, since 2×900808² = 1622910105728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (900803) by changing a digit.

900808 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56293 + ... + 56308.

2⁹⁰⁰⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

900808 is a deficient number, since it is larger than the sum of its proper divisors (788222).

900808 is a wasteful number, since it uses less digits than its factorization.

900808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112607 (or 112603 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 900808 is about 949.1090559045. The cubic root of 900808 is about 96.5778229821.

The spelling of 900808 in words is "nine hundred thousand, eight hundred eight".