89903920 has 40 divisors (see below), whose sum is σ = 209870496. Its totient is φ = 35816448.

The previous prime is 89903917. The next prime is 89903959. The reversal of 89903920 is 2930998.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18904 + ... + 23176.

Almost surely, 2^89903920 is an apocalyptic number.

89903920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

89903920 is an abundant number, since it is smaller than the sum of its proper divisors (119966576).

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

89903920 is a wasteful number, since it uses less digits than its factorization.

89903920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4549 (or 4543 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 89903920 is about 9481.7677676686. The cubic root of 89903920 is about 447.9809462560.

The spelling of 89903920 in words is "eighty-nine million, nine hundred three thousand, nine hundred twenty".