89315999 has 4 divisors (see below), whose sum is σ = 91494480. Its totient is φ = 87137520.

The previous prime is 89315987. The next prime is 89316001. The reversal of 89315999 is 99951398.

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 89315999 - 2²⁰ = 88267423 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 89315999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89315959) 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, 1089179 + ... + 1089260.

It is an arithmetic number, because the mean of its divisors is an integer number (22873620).

Almost surely, 2^89315999 is an apocalyptic number.

89315999 is a deficient number, since it is larger than the sum of its proper divisors (2178481).

89315999 is a wasteful number, since it uses less digits than its factorization.

89315999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2178480.

The product of its digits is 787320, while the sum is 53.

The square root of 89315999 is about 9450.7142058153. The cubic root of 89315999 is about 447.0022955138.

The spelling of 89315999 in words is "eighty-nine million, three hundred fifteen thousand, nine hundred ninety-nine".