89907799 has 4 divisors (see below), whose sum is σ = 91431720. Its totient is φ = 88383880.

The previous prime is 89907761. The next prime is 89907823. The reversal of 89907799 is 99770998.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89907799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89907199) 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, 761872 + ... + 761989.

It is an arithmetic number, because the mean of its divisors is an integer number (22857930).

Almost surely, 2^89907799 is an apocalyptic number.

89907799 is a deficient number, since it is larger than the sum of its proper divisors (1523921).

89907799 is a wasteful number, since it uses less digits than its factorization.

89907799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523920.

The product of its (nonzero) digits is 2571912, while the sum is 58.

The square root of 89907799 is about 9481.9723159267. The cubic root of 89907799 is about 447.9873890344.

The spelling of 89907799 in words is "eighty-nine million, nine hundred seven thousand, seven hundred ninety-nine".