89441640 has 96 divisors (see below), whose sum is σ = 295682400. Its totient is φ = 23441280.

The previous prime is 89441609. The next prime is 89441689. The reversal of 89441640 is 4614498.

It is a happy number.

89441640 is a `hidden beast` number, since 8 + 9 + 4 + 4 + 1 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 89441595 and 89441604.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19135 + ... + 23345.

It is an arithmetic number, because the mean of its divisors is an integer number (3080025).

Almost surely, 2^89441640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89441640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147841200).

89441640 is an abundant number, since it is smaller than the sum of its proper divisors (206240760).

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

89441640 is a wasteful number, since it uses less digits than its factorization.

89441640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4287 (or 4280 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 89441640 is about 9457.3590393936. The cubic root of 89441640 is about 447.2117969927.

The spelling of 89441640 in words is "eighty-nine million, four hundred forty-one thousand, six hundred forty".