89238691 has 2 divisors, whose sum is σ = 89238692. Its totient is φ = 89238690.

The previous prime is 89238683. The next prime is 89238703. The reversal of 89238691 is 19683298.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89238691 - 2³ = 89238683 is a prime.

It is not a weakly prime, because it can be changed into another prime (89238601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44619345 + 44619346.

It is an arithmetic number, because the mean of its divisors is an integer number (44619346).

Almost surely, 2^89238691 is an apocalyptic number.

89238691 is a deficient number, since it is larger than the sum of its proper divisors (1).

89238691 is an equidigital number, since it uses as much as digits as its factorization.

89238691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 46.

The square root of 89238691 is about 9446.6232591334. The cubic root of 89238691 is about 446.8732897778.

The spelling of 89238691 in words is "eighty-nine million, two hundred thirty-eight thousand, six hundred ninety-one".