89718943 has 2 divisors, whose sum is σ = 89718944. Its totient is φ = 89718942.

The previous prime is 89718901. The next prime is 89718961. The reversal of 89718943 is 34981798.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89718943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89718143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44859471 + 44859472.

It is an arithmetic number, because the mean of its divisors is an integer number (44859472).

Almost surely, 2^89718943 is an apocalyptic number.

89718943 is a deficient number, since it is larger than the sum of its proper divisors (1).

89718943 is an equidigital number, since it uses as much as digits as its factorization.

89718943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 49.

The square root of 89718943 is about 9472.0083931551. The cubic root of 89718943 is about 447.6734955581.

The spelling of 89718943 in words is "eighty-nine million, seven hundred eighteen thousand, nine hundred forty-three".