89986440 has 64 divisors (see below), whose sum is σ = 285845760. Its totient is φ = 22584320.

The previous prime is 89986439. The next prime is 89986441. The reversal of 89986440 is 4468998.

It is an interprime number because it is at equal distance from previous prime (89986439) and next prime (89986441).

It is a self number, because there is not a number n which added to its sum of digits gives 89986440.

It is not an unprimeable number, because it can be changed into a prime (89986441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20016 + ... + 24095.

It is an arithmetic number, because the mean of its divisors is an integer number (4466340).

Almost surely, 2^89986440 is an apocalyptic number.

It is an amenable number.

89986440 is an abundant number, since it is smaller than the sum of its proper divisors (195859320).

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

89986440 is a wasteful number, since it uses less digits than its factorization.

89986440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44142 (or 44138 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 89986440 is about 9486.1182788325. The cubic root of 89986440 is about 448.1179669148.

The spelling of 89986440 in words is "eighty-nine million, nine hundred eighty-six thousand, four hundred forty".