89942281 has 16 divisors (see below), whose sum is σ = 106460928. Its totient is φ = 74908800.

The previous prime is 89942273. The next prime is 89942353. The reversal of 89942281 is 18224998.

It is a cyclic number.

It is not a de Polignac number, because 89942281 - 2³ = 89942273 is a prime.

It is a super-2 number, since 2×89942281² = 16179227822965922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89942201) 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, 17296 + ... + 21886.

It is an arithmetic number, because the mean of its divisors is an integer number (6653808).

Almost surely, 2^89942281 is an apocalyptic number.

It is an amenable number.

89942281 is a deficient number, since it is larger than the sum of its proper divisors (16518647).

89942281 is a wasteful number, since it uses less digits than its factorization.

89942281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4752.

The product of its digits is 82944, while the sum is 43.

The square root of 89942281 is about 9483.7904342093. The cubic root of 89942281 is about 448.0446533537.

The spelling of 89942281 in words is "eighty-nine million, nine hundred forty-two thousand, two hundred eighty-one".