89144685 has 128 divisors (see below), whose sum is σ = 199065600. Its totient is φ = 36910080.

The previous prime is 89144659. The next prime is 89144687. The reversal of 89144685 is 58644198.

It is not a de Polignac number, because 89144685 - 2⁶ = 89144621 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 89144685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89144687) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 497926 + ... + 498104.

It is an arithmetic number, because the mean of its divisors is an integer number (1555200).

Almost surely, 2^89144685 is an apocalyptic number.

89144685 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

89144685 is an abundant number, since it is smaller than the sum of its proper divisors (109920915).

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

89144685 is a wasteful number, since it uses less digits than its factorization.

89144685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 242 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 89144685 is about 9441.6463077156. The cubic root of 89144685 is about 446.7163192619.

The spelling of 89144685 in words is "eighty-nine million, one hundred forty-four thousand, six hundred eighty-five".