89972318 has 4 divisors (see below), whose sum is σ = 134958480. Its totient is φ = 44986158.

The previous prime is 89972317. The next prime is 89972321. The reversal of 89972318 is 81327998.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89972317) 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 as a sum of consecutive naturals, namely, 22493078 + ... + 22493081.

It is an arithmetic number, because the mean of its divisors is an integer number (33739620).

Almost surely, 2^89972318 is an apocalyptic number.

89972318 is a deficient number, since it is larger than the sum of its proper divisors (44986162).

89972318 is a wasteful number, since it uses less digits than its factorization.

89972318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44986161.

The product of its digits is 217728, while the sum is 47.

The square root of 89972318 is about 9485.3738987981. The cubic root of 89972318 is about 448.0945239271.

The spelling of 89972318 in words is "eighty-nine million, nine hundred seventy-two thousand, three hundred eighteen".