89137609 has 4 divisors (see below), whose sum is σ = 97241040. Its totient is φ = 81034180.

The previous prime is 89137603. The next prime is 89137621. The reversal of 89137609 is 90673198.

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 89137609 - 2⁷ = 89137481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89137603) 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, 4051699 + ... + 4051720.

It is an arithmetic number, because the mean of its divisors is an integer number (24310260).

Almost surely, 2^89137609 is an apocalyptic number.

It is an amenable number.

89137609 is a deficient number, since it is larger than the sum of its proper divisors (8103431).

89137609 is a wasteful number, since it uses less digits than its factorization.

89137609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8103430.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 89137609 is about 9441.2715774942. The cubic root of 89137609 is about 446.7044993449.

The spelling of 89137609 in words is "eighty-nine million, one hundred thirty-seven thousand, six hundred nine".