89731369 has 16 divisors (see below), whose sum is σ = 110759040. Its totient is φ = 70790400.

The previous prime is 89731361. The next prime is 89731373. The reversal of 89731369 is 96313798.

It is a cyclic number.

It is not a de Polignac number, because 89731369 - 2³ = 89731361 is a prime.

It is a super-2 number, since 2×89731369² = 16103437165228322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (89731361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35262 + ... + 37720.

It is an arithmetic number, because the mean of its divisors is an integer number (6922440).

Almost surely, 2^89731369 is an apocalyptic number.

It is an amenable number.

89731369 is a deficient number, since it is larger than the sum of its proper divisors (21027671).

89731369 is a wasteful number, since it uses less digits than its factorization.

89731369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2880.

The product of its digits is 244944, while the sum is 46.

The square root of 89731369 is about 9472.6643031409. The cubic root of 89731369 is about 447.6941620747.

It can be divided in two parts, 89731 and 369, that added together give a triangular number (90100 = T₄₂₄).

The spelling of 89731369 in words is "eighty-nine million, seven hundred thirty-one thousand, three hundred sixty-nine".