89147409 has 16 divisors (see below), whose sum is σ = 128308992. Its totient is φ = 54730368.

The previous prime is 89147353. The next prime is 89147417. The reversal of 89147409 is 90474198.

It is not a de Polignac number, because 89147409 - 2⁸ = 89147153 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (89147459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15589 + ... + 20525.

It is an arithmetic number, because the mean of its divisors is an integer number (8019312).

Almost surely, 2^89147409 is an apocalyptic number.

It is an amenable number.

89147409 is a deficient number, since it is larger than the sum of its proper divisors (39161583).

89147409 is a wasteful number, since it uses less digits than its factorization.

89147409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5416.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 89147409 is about 9441.7905611171. The cubic root of 89147409 is about 446.7208693288.

The spelling of 89147409 in words is "eighty-nine million, one hundred forty-seven thousand, four hundred nine".