89885813 has 4 divisors (see below), whose sum is σ = 89925420. Its totient is φ = 89846208.

The previous prime is 89885801. The next prime is 89885821. The reversal of 89885813 is 31858898.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 84235684 + 5650129 = 9178^2 + 2377^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89885813 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 (89885843) 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, 16178 + ... + 21011.

It is an arithmetic number, because the mean of its divisors is an integer number (22481355).

Almost surely, 2^89885813 is an apocalyptic number.

It is an amenable number.

89885813 is a deficient number, since it is larger than the sum of its proper divisors (39607).

89885813 is a wasteful number, since it uses less digits than its factorization.

89885813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39606.

The product of its digits is 552960, while the sum is 50.

The square root of 89885813 is about 9480.8128870894. The cubic root of 89885813 is about 447.9508692003.

The spelling of 89885813 in words is "eighty-nine million, eight hundred eighty-five thousand, eight hundred thirteen".