89218918 has 4 divisors (see below), whose sum is σ = 133828380. Its totient is φ = 44609458.

The previous prime is 89218903. The next prime is 89218919. The reversal of 89218918 is 81981298.

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 (89218919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22304728 + ... + 22304731.

It is an arithmetic number, because the mean of its divisors is an integer number (33457095).

Almost surely, 2^89218918 is an apocalyptic number.

89218918 is a deficient number, since it is larger than the sum of its proper divisors (44609462).

89218918 is a wasteful number, since it uses less digits than its factorization.

89218918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44609461.

The product of its digits is 82944, while the sum is 46.

The square root of 89218918 is about 9445.5766367120. The cubic root of 89218918 is about 446.8402821285.

The spelling of 89218918 in words is "eighty-nine million, two hundred eighteen thousand, nine hundred eighteen".