89708399 has 4 divisors (see below), whose sum is σ = 97863720. Its totient is φ = 81553080.

The previous prime is 89708393. The next prime is 89708401. The reversal of 89708399 is 99380798.

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-89708399 is a prime.

It is a super-2 number, since 2×89708399² = 16095193702286402, which contains 22 as substring.

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 89708399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89708393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4077644 + ... + 4077665.

It is an arithmetic number, because the mean of its divisors is an integer number (24465930).

Almost surely, 2^89708399 is an apocalyptic number.

89708399 is a deficient number, since it is larger than the sum of its proper divisors (8155321).

89708399 is a wasteful number, since it uses less digits than its factorization.

89708399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8155320.

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 89708399 is about 9471.4517894566. The cubic root of 89708399 is about 447.6559576257.

The spelling of 89708399 in words is "eighty-nine million, seven hundred eight thousand, three hundred ninety-nine".