89043440 has 20 divisors (see below), whose sum is σ = 207026184. Its totient is φ = 35617344.

The previous prime is 89043413. The next prime is 89043457. The reversal of 89043440 is 4434098.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 89043397 and 89043406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 556442 + ... + 556601.

Almost surely, 2^89043440 is an apocalyptic number.

89043440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

89043440 is an abundant number, since it is smaller than the sum of its proper divisors (117982744).

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

89043440 is a wasteful number, since it uses less digits than its factorization.

89043440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113056 (or 1113050 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 89043440 is about 9436.2831665863. The cubic root of 89043440 is about 446.5471376411.

The spelling of 89043440 in words is "eighty-nine million, forty-three thousand, four hundred forty".