89664943 has 2 divisors, whose sum is σ = 89664944. Its totient is φ = 89664942.

The previous prime is 89664901. The next prime is 89664973. The reversal of 89664943 is 34946698.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89664943 - 2²⁵ = 56110511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89664973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44832471 + 44832472.

It is an arithmetic number, because the mean of its divisors is an integer number (44832472).

Almost surely, 2^89664943 is an apocalyptic number.

89664943 is a deficient number, since it is larger than the sum of its proper divisors (1).

89664943 is an equidigital number, since it uses as much as digits as its factorization.

89664943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 49.

The square root of 89664943 is about 9469.1574598799. The cubic root of 89664943 is about 447.5836623538.

The spelling of 89664943 in words is "eighty-nine million, six hundred sixty-four thousand, nine hundred forty-three".