89999998 has 32 divisors (see below), whose sum is σ = 156240000. Its totient is φ = 38452320.

The previous prime is 89999983. The next prime is 89999999.

89999998 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89999999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57328 + ... + 58876.

It is an arithmetic number, because the mean of its divisors is an integer number (4882500).

Almost surely, 2^89999998 is an apocalyptic number.

89999998 is a deficient number, since it is larger than the sum of its proper divisors (66240002).

89999998 is a wasteful number, since it uses less digits than its factorization.

89999998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720.

The product of its digits is 34012224, while the sum is 70.

The square root of 89999998 is about 9486.8328750959. The cubic root of 89999998 is about 448.1404713362.

The spelling of 89999998 in words is "eighty-nine million, nine hundred ninety-nine thousand, nine hundred ninety-eight".