89090815 has 16 divisors (see below), whose sum is σ = 116829216. Its totient is φ = 64681600.

The previous prime is 89090801. The next prime is 89090819. The reversal of 89090815 is 51809098.

It is not a de Polignac number, because 89090815 - 2¹⁷ = 88959743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89090819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44169 + ... + 46141.

It is an arithmetic number, because the mean of its divisors is an integer number (7301826).

Almost surely, 2^89090815 is an apocalyptic number.

89090815 is a deficient number, since it is larger than the sum of its proper divisors (27738401).

89090815 is a wasteful number, since it uses less digits than its factorization.

89090815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2810.

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 89090815 is about 9438.7930902208. The cubic root of 89090815 is about 446.6263177953.

The spelling of 89090815 in words is "eighty-nine million, ninety thousand, eight hundred fifteen".