89309868 has 12 divisors (see below), whose sum is σ = 208389720. Its totient is φ = 29769952.

The previous prime is 89309867. The next prime is 89309873. The reversal of 89309868 is 86890398.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 89309868.

It is not an unprimeable number, because it can be changed into a prime (89309867) 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, 3721233 + ... + 3721256.

It is an arithmetic number, because the mean of its divisors is an integer number (17365810).

Almost surely, 2^89309868 is an apocalyptic number.

It is an amenable number.

89309868 is an abundant number, since it is smaller than the sum of its proper divisors (119079852).

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

89309868 is a wasteful number, since it uses less digits than its factorization.

89309868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7442496 (or 7442494 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 89309868 is about 9450.3898332291. The cubic root of 89309868 is about 446.9920672836.

The spelling of 89309868 in words is "eighty-nine million, three hundred nine thousand, eight hundred sixty-eight".