89573440 has 56 divisors (see below), whose sum is σ = 232696512. Its totient is φ = 32570880.

The previous prime is 89573413. The next prime is 89573443. The reversal of 89573440 is 4437598.

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

It is a junction number, because it is equal to n+sod(n) for n = 89573393 and 89573402.

It is not an unprimeable number, because it can be changed into a prime (89573443) 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, 9204 + ... + 16243.

Almost surely, 2^89573440 is an apocalyptic number.

89573440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

89573440 is an abundant number, since it is smaller than the sum of its proper divisors (143123072).

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

89573440 is a wasteful number, since it uses less digits than its factorization.

89573440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25475 (or 25465 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 89573440 is about 9464.3245929121. The cubic root of 89573440 is about 447.4313576143.

The spelling of 89573440 in words is "eighty-nine million, five hundred seventy-three thousand, four hundred forty".