89599999 has 4 divisors (see below), whose sum is σ = 89682336. Its totient is φ = 89517664.

The previous prime is 89599997. The next prime is 89600011. The reversal of 89599999 is 99999598.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 89599999 - 2¹ = 89599997 is a prime.

It is a Duffinian number.

89599999 is a modest number, since divided by 9999 gives 8959 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89599997) 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, 39514 + ... + 41719.

It is an arithmetic number, because the mean of its divisors is an integer number (22420584).

Almost surely, 2^89599999 is an apocalyptic number.

89599999 is a deficient number, since it is larger than the sum of its proper divisors (82337).

89599999 is a wasteful number, since it uses less digits than its factorization.

89599999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82336.

The product of its digits is 21257640, while the sum is 67.

The square root of 89599999 is about 9465.7276001372. The cubic root of 89599999 is about 447.4755751678.

The spelling of 89599999 in words is "eighty-nine million, five hundred ninety-nine thousand, nine hundred ninety-nine".