89919997 has 8 divisors (see below), whose sum is σ = 91197792. Its totient is φ = 88650000.

The previous prime is 89919979. The next prime is 89920001. The reversal of 89919997 is 79991998.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89919997 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 (89919967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23578 + ... + 27124.

It is an arithmetic number, because the mean of its divisors is an integer number (11399724).

Almost surely, 2^89919997 is an apocalyptic number.

It is an amenable number.

89919997 is a deficient number, since it is larger than the sum of its proper divisors (1277795).

89919997 is a wasteful number, since it uses less digits than its factorization.

89919997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3899.

The product of its digits is 3306744, while the sum is 61.

The square root of 89919997 is about 9482.6155147196. The cubic root of 89919997 is about 448.0076479482.

The spelling of 89919997 in words is "eighty-nine million, nine hundred nineteen thousand, nine hundred ninety-seven".