89239387 has 2 divisors, whose sum is σ = 89239388. Its totient is φ = 89239386.

The previous prime is 89239369. The next prime is 89239399. The reversal of 89239387 is 78393298.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89239387 - 2⁷ = 89239259 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89239387.

It is not a weakly prime, because it can be changed into another prime (89239357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44619693 + 44619694.

It is an arithmetic number, because the mean of its divisors is an integer number (44619694).

Almost surely, 2^89239387 is an apocalyptic number.

89239387 is a deficient number, since it is larger than the sum of its proper divisors (1).

89239387 is an equidigital number, since it uses as much as digits as its factorization.

89239387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 49.

The square root of 89239387 is about 9446.6600976218. The cubic root of 89239387 is about 446.8744515422.

The spelling of 89239387 in words is "eighty-nine million, two hundred thirty-nine thousand, three hundred eighty-seven".