89089531 has 4 divisors (see below), whose sum is σ = 89113752. Its totient is φ = 89065312.

The previous prime is 89089519. The next prime is 89089543. The reversal of 89089531 is 13598098.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13598098 = 2 ⋅6799049.

It is an interprime number because it is at equal distance from previous prime (89089519) and next prime (89089543).

It is a cyclic number.

It is not a de Polignac number, because 89089531 - 2¹¹ = 89087483 is a prime.

It is a super-2 number, since 2×89089531² = 15873889067599922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89089501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5326 + ... + 14371.

It is an arithmetic number, because the mean of its divisors is an integer number (22278438).

Almost surely, 2^89089531 is an apocalyptic number.

89089531 is a deficient number, since it is larger than the sum of its proper divisors (24221).

89089531 is a wasteful number, since it uses less digits than its factorization.

89089531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24220.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 89089531 is about 9438.7250728051. The cubic root of 89089531 is about 446.6241721535.

The spelling of 89089531 in words is "eighty-nine million, eighty-nine thousand, five hundred thirty-one".