89618940 has 48 divisors (see below), whose sum is σ = 278816160. Its totient is φ = 23898240.

The previous prime is 89618933. The next prime is 89618941. The reversal of 89618940 is 4981698.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89618941) 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, 82441 + ... + 83520.

It is an arithmetic number, because the mean of its divisors is an integer number (5808670).

Almost surely, 2^89618940 is an apocalyptic number.

It is an amenable number.

89618940 is an abundant number, since it is smaller than the sum of its proper divisors (189197220).

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

89618940 is a wasteful number, since it uses less digits than its factorization.

89618940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165979 (or 165971 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 89618940 is about 9466.7280514442. The cubic root of 89618940 is about 447.5071043263.

The spelling of 89618940 in words is "eighty-nine million, six hundred eighteen thousand, nine hundred forty".