89719423 has 2 divisors, whose sum is σ = 89719424. Its totient is φ = 89719422.

The previous prime is 89719397. The next prime is 89719433. The reversal of 89719423 is 32491798.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89719423 - 2⁵ = 89719391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89719423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89719433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44859711 + 44859712.

It is an arithmetic number, because the mean of its divisors is an integer number (44859712).

Almost surely, 2^89719423 is an apocalyptic number.

89719423 is a deficient number, since it is larger than the sum of its proper divisors (1).

89719423 is an equidigital number, since it uses as much as digits as its factorization.

89719423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The square root of 89719423 is about 9472.0337309366. The cubic root of 89719423 is about 447.6742939138.

The spelling of 89719423 in words is "eighty-nine million, seven hundred nineteen thousand, four hundred twenty-three".