89840791 has 2 divisors, whose sum is σ = 89840792. Its totient is φ = 89840790.

The previous prime is 89840771. The next prime is 89840809. The reversal of 89840791 is 19704898.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89840791 - 2¹¹ = 89838743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89840701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44920395 + 44920396.

It is an arithmetic number, because the mean of its divisors is an integer number (44920396).

Almost surely, 2^89840791 is an apocalyptic number.

89840791 is a deficient number, since it is larger than the sum of its proper divisors (1).

89840791 is an equidigital number, since it uses as much as digits as its factorization.

89840791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 89840791 is about 9478.4382152336. The cubic root of 89840791 is about 447.8760668428.

The spelling of 89840791 in words is "eighty-nine million, eight hundred forty thousand, seven hundred ninety-one".