89023644 has 48 divisors (see below), whose sum is σ = 234603040. Its totient is φ = 29185920.

The previous prime is 89023633. The next prime is 89023657. The reversal of 89023644 is 44632098.

It is a happy number.

89023644 is a `hidden beast` number, since 8 + 9 + 0 + 2 + 3 + 644 = 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 = 89023599 and 89023608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169 + ... + 13344.

Almost surely, 2^89023644 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 89023644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117301520).

89023644 is an abundant number, since it is smaller than the sum of its proper divisors (145579396).

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

89023644 is a wasteful number, since it uses less digits than its factorization.

89023644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13587 (or 13579 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 89023644 is about 9435.2341783339. The cubic root of 89023644 is about 446.5140432986.

The spelling of 89023644 in words is "eighty-nine million, twenty-three thousand, six hundred forty-four".