89644799 has 4 divisors (see below), whose sum is σ = 89665536. Its totient is φ = 89624064.

The previous prime is 89644787. The next prime is 89644843. The reversal of 89644799 is 99744698.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 89644799 - 2²⁴ = 72867583 is a prime.

It is a Duffinian number.

Its product of digits (3919104) is a multiple of the sum of its prime divisors (20736).

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89644729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1154 + ... + 13439.

It is an arithmetic number, because the mean of its divisors is an integer number (22416384).

Almost surely, 2^89644799 is an apocalyptic number.

89644799 is a deficient number, since it is larger than the sum of its proper divisors (20737).

89644799 is a wasteful number, since it uses less digits than its factorization.

89644799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20736.

The product of its digits is 3919104, while the sum is 56.

The square root of 89644799 is about 9468.0937363336. The cubic root of 89644799 is about 447.5501420048.

The spelling of 89644799 in words is "eighty-nine million, six hundred forty-four thousand, seven hundred ninety-nine".