89539509 has 8 divisors (see below), whose sum is σ = 119725632. Its totient is φ = 59523200.

The previous prime is 89539447. The next prime is 89539517. The reversal of 89539509 is 90593598.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 89539509 - 2¹⁵ = 89506741 is a prime.

It is a super-2 number, since 2×89539509² = 16034647343922162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89539579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41217 + ... + 43334.

It is an arithmetic number, because the mean of its divisors is an integer number (14965704).

Almost surely, 2^89539509 is an apocalyptic number.

It is an amenable number.

89539509 is a deficient number, since it is larger than the sum of its proper divisors (30186123).

89539509 is a wasteful number, since it uses less digits than its factorization.

89539509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84907.

The product of its (nonzero) digits is 437400, while the sum is 48.

The square root of 89539509 is about 9462.5318493519. The cubic root of 89539509 is about 447.3748538457.

It can be divided in two parts, 895 and 39509, that added together give a palindrome (40404).

The spelling of 89539509 in words is "eighty-nine million, five hundred thirty-nine thousand, five hundred nine".