89709613 has 4 divisors (see below), whose sum is σ = 102525280. Its totient is φ = 76893948.

The previous prime is 89709551. The next prime is 89709661. The reversal of 89709613 is 31690798.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31690798 = 2 ⋅15845399.

It is a cyclic number.

It is not a de Polignac number, because 89709613 - 2¹³ = 89701421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89709613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89709413) 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, 6407823 + ... + 6407836.

It is an arithmetic number, because the mean of its divisors is an integer number (25631320).

Almost surely, 2^89709613 is an apocalyptic number.

It is an amenable number.

89709613 is a deficient number, since it is larger than the sum of its proper divisors (12815667).

89709613 is a wasteful number, since it uses less digits than its factorization.

89709613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12815666.

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

The square root of 89709613 is about 9471.5158765638. The cubic root of 89709613 is about 447.6579769531.

The spelling of 89709613 in words is "eighty-nine million, seven hundred nine thousand, six hundred thirteen".