89991404 has 24 divisors (see below), whose sum is σ = 168412608. Its totient is φ = 41926400.

The previous prime is 89991401. The next prime is 89991449. The reversal of 89991404 is 40419998.

It is not an unprimeable number, because it can be changed into a prime (89991401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317 + ... + 13419.

It is an arithmetic number, because the mean of its divisors is an integer number (7017192).

Almost surely, 2^89991404 is an apocalyptic number.

It is an amenable number.

89991404 is a deficient number, since it is larger than the sum of its proper divisors (78421204).

89991404 is a wasteful number, since it uses less digits than its factorization.

89991404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13225 (or 13223 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 89991404 is about 9486.3799207074. The cubic root of 89991404 is about 448.1262067366.

The spelling of 89991404 in words is "eighty-nine million, nine hundred ninety-one thousand, four hundred four".