89231491 has 2 divisors, whose sum is σ = 89231492. Its totient is φ = 89231490.

The previous prime is 89231479. The next prime is 89231503. The reversal of 89231491 is 19413298.

It is a balanced prime because it is at equal distance from previous prime (89231479) and next prime (89231503).

It is a cyclic number.

It is not a de Polignac number, because 89231491 - 2⁵ = 89231459 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89231491.

It is not a weakly prime, because it can be changed into another prime (89231411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44615745 + 44615746.

It is an arithmetic number, because the mean of its divisors is an integer number (44615746).

Almost surely, 2^89231491 is an apocalyptic number.

89231491 is a deficient number, since it is larger than the sum of its proper divisors (1).

89231491 is an equidigital number, since it uses as much as digits as its factorization.

89231491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 37.

The square root of 89231491 is about 9446.2421628921. The cubic root of 89231491 is about 446.8612711710.

The spelling of 89231491 in words is "eighty-nine million, two hundred thirty-one thousand, four hundred ninety-one".