89197440 has 64 divisors (see below), whose sum is σ = 284322960. Its totient is φ = 23785472.

The previous prime is 89197373. The next prime is 89197469. The reversal of 89197440 is 4479198.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 89197392 and 89197401.

It is a congruent number.

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, 21309 + ... + 25148.

Almost surely, 2^89197440 is an apocalyptic number.

89197440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

89197440 is an abundant number, since it is smaller than the sum of its proper divisors (195125520).

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

89197440 is a wasteful number, since it uses less digits than its factorization.

89197440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46479 (or 46467 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 89197440 is about 9444.4396339857. The cubic root of 89197440 is about 446.8044227464.

The spelling of 89197440 in words is "eighty-nine million, one hundred ninety-seven thousand, four hundred forty".