89917956 has 72 divisors (see below), whose sum is σ = 244433280. Its totient is φ = 27781056.

The previous prime is 89917943. The next prime is 89917957. The reversal of 89917956 is 65971998.

It is a super-2 number, since 2×89917956² = 16170477622435872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (89917957) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30750 + ... + 33546.

Almost surely, 2^89917956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89917956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122216640).

89917956 is an abundant number, since it is smaller than the sum of its proper divisors (154515324).

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

89917956 is a wasteful number, since it uses less digits than its factorization.

89917956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2873 (or 2868 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 54.

The square root of 89917956 is about 9482.5078961212. The cubic root of 89917956 is about 448.0042583035.

The spelling of 89917956 in words is "eighty-nine million, nine hundred seventeen thousand, nine hundred fifty-six".