89515998 has 96 divisors (see below), whose sum is σ = 231154560. Its totient is φ = 24678720.

The previous prime is 89515963. The next prime is 89516113. The reversal of 89515998 is 89951598.

It is a super-2 number, since 2×89515998² = 16026227795872008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 213433 + ... + 213851.

It is an arithmetic number, because the mean of its divisors is an integer number (2407860).

Almost surely, 2^89515998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89515998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115577280).

89515998 is an abundant number, since it is smaller than the sum of its proper divisors (141638562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89515998 is a wasteful number, since it uses less digits than its factorization.

89515998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534 (or 531 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 54.

The square root of 89515998 is about 9461.2894470046. The cubic root of 89515998 is about 447.3356936617.

Subtracting 89515998 from its reverse (89951598), we obtain a square (435600 = 660²).

The spelling of 89515998 in words is "eighty-nine million, five hundred fifteen thousand, nine hundred ninety-eight".