9090904900 has 72 divisors (see below), whose sum is σ = 24595050816. Its totient is φ = 2833526400.

The previous prime is 9090904897. The next prime is 9090904903. The reversal of 9090904900 is 94090909.

It is an interprime number because it is at equal distance from previous prime (9090904897) and next prime (9090904903).

It is not an unprimeable number, because it can be changed into a prime (9090904903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 582619 + ... + 598018.

It is an arithmetic number, because the mean of its divisors is an integer number (341597928).

Almost surely, 2^9090904900 is an apocalyptic number.

It is an amenable number.

9090904900 is an abundant number, since it is smaller than the sum of its proper divisors (15504145916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9090904900 is a wasteful number, since it uses less digits than its factorization.

9090904900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180669 (or 1180662 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 9090904900 is about 95346.2369472440. The cubic root of 9090904900 is about 2087.0637017110.

The spelling of 9090904900 in words is "nine billion, ninety million, nine hundred four thousand, nine hundred".