89238813 has 4 divisors (see below), whose sum is σ = 118985088. Its totient is φ = 59492540.

The previous prime is 89238757. The next prime is 89238817. The reversal of 89238813 is 31883298.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 89238813 - 2¹⁰ = 89237789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89238817) 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, 14873133 + ... + 14873138.

It is an arithmetic number, because the mean of its divisors is an integer number (29746272).

Almost surely, 2^89238813 is an apocalyptic number.

It is an amenable number.

89238813 is a deficient number, since it is larger than the sum of its proper divisors (29746275).

89238813 is a wasteful number, since it uses less digits than its factorization.

89238813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29746274.

The product of its digits is 82944, while the sum is 42.

The square root of 89238813 is about 9446.6297164650. The cubic root of 89238813 is about 446.8734934208.

The spelling of 89238813 in words is "eighty-nine million, two hundred thirty-eight thousand, eight hundred thirteen".