89918 has 4 divisors (see below), whose sum is σ = 134880. Its totient is φ = 44958.

The previous prime is 89917. The next prime is 89923. The reversal of 89918 is 81998.

It is a happy number.

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

It is a plaindrome in base 14.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 89918.

It is not an unprimeable number, because it can be changed into a prime (89917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22478 + ... + 22481.

It is an arithmetic number, because the mean of its divisors is an integer number (33720).

2⁸⁹⁹¹⁸ is an apocalyptic number.

89918 is a deficient number, since it is larger than the sum of its proper divisors (44962).

89918 is a wasteful number, since it uses less digits than its factorization.

89918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44961.

The product of its digits is 5184, while the sum is 35.

The square root of 89918 is about 299.8633021895. The cubic root of 89918 is about 44.8004331378.

The spelling of 89918 in words is "eighty-nine thousand, nine hundred eighteen".