89531243 has 2 divisors, whose sum is σ = 89531244. Its totient is φ = 89531242.

The previous prime is 89531237. The next prime is 89531251. The reversal of 89531243 is 34213598.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89531243 - 2⁴ = 89531227 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (89531293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44765621 + 44765622.

It is an arithmetic number, because the mean of its divisors is an integer number (44765622).

Almost surely, 2^89531243 is an apocalyptic number.

89531243 is a deficient number, since it is larger than the sum of its proper divisors (1).

89531243 is an equidigital number, since it uses as much as digits as its factorization.

89531243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 35.

The square root of 89531243 is about 9462.0950639908. The cubic root of 89531243 is about 447.3610866853.

The spelling of 89531243 in words is "eighty-nine million, five hundred thirty-one thousand, two hundred forty-three".