89231291 has 2 divisors, whose sum is σ = 89231292. Its totient is φ = 89231290.

The previous prime is 89231287. The next prime is 89231339. The reversal of 89231291 is 19213298.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89231291 - 2² = 89231287 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (89231491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44615645 + 44615646.

It is an arithmetic number, because the mean of its divisors is an integer number (44615646).

Almost surely, 2^89231291 is an apocalyptic number.

89231291 is a deficient number, since it is larger than the sum of its proper divisors (1).

89231291 is an equidigital number, since it uses as much as digits as its factorization.

89231291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 35.

The square root of 89231291 is about 9446.2315766659. The cubic root of 89231291 is about 446.8609373116.

The spelling of 89231291 in words is "eighty-nine million, two hundred thirty-one thousand, two hundred ninety-one".