89509440 has 56 divisors (see below), whose sum is σ = 284195520. Its totient is φ = 23868928.

The previous prime is 89509429. The next prime is 89509451. The reversal of 89509440 is 4490598.

It is an interprime number because it is at equal distance from previous prime (89509429) and next prime (89509451).

It is a super-2 number, since 2×89509440² = 16023879698227200, which contains 22 as substring.

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, 45660 + ... + 47579.

It is an arithmetic number, because the mean of its divisors is an integer number (5074920).

Almost surely, 2^89509440 is an apocalyptic number.

89509440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

89509440 is an abundant number, since it is smaller than the sum of its proper divisors (194686080).

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

89509440 is a wasteful number, since it uses less digits than its factorization.

89509440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93259 (or 93249 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 89509440 is about 9460.9428705600. The cubic root of 89509440 is about 447.3247693607.

The spelling of 89509440 in words is "eighty-nine million, five hundred nine thousand, four hundred forty".