89631361 has 4 divisors (see below), whose sum is σ = 94903812. Its totient is φ = 84358912.

The previous prime is 89631349. The next prime is 89631389. The reversal of 89631361 is 16313698.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16313698 = 2 ⋅8156849.

It can be written as a sum of positive squares in 2 ways, for example, as 64320400 + 25310961 = 8020^2 + 5031^2 .

It is a cyclic number.

It is not a de Polignac number, because 89631361 - 2⁷ = 89631233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89631361.

It is not an unprimeable number, because it can be changed into a prime (89631331) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2636200 + ... + 2636233.

It is an arithmetic number, because the mean of its divisors is an integer number (23725953).

Almost surely, 2^89631361 is an apocalyptic number.

It is an amenable number.

89631361 is a deficient number, since it is larger than the sum of its proper divisors (5272451).

89631361 is a wasteful number, since it uses less digits than its factorization.

89631361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5272450.

The product of its digits is 23328, while the sum is 37.

The square root of 89631361 is about 9467.3840631930. The cubic root of 89631361 is about 447.5277778914.

It can be divided in two parts, 8 and 9631361, that added together give a palindrome (9631369).

The spelling of 89631361 in words is "eighty-nine million, six hundred thirty-one thousand, three hundred sixty-one".