89131429 has 2 divisors, whose sum is σ = 89131430. Its totient is φ = 89131428.

The previous prime is 89131423. The next prime is 89131433. The reversal of 89131429 is 92413198.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82319329 + 6812100 = 9073^2 + 2610^2 .

It is a cyclic number.

It is not a de Polignac number, because 89131429 - 2³ = 89131421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89131421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44565714 + 44565715.

It is an arithmetic number, because the mean of its divisors is an integer number (44565715).

Almost surely, 2^89131429 is an apocalyptic number.

It is an amenable number.

89131429 is a deficient number, since it is larger than the sum of its proper divisors (1).

89131429 is an equidigital number, since it uses as much as digits as its factorization.

89131429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 37.

The square root of 89131429 is about 9440.9442853986. The cubic root of 89131429 is about 446.6941756157.

The spelling of 89131429 in words is "eighty-nine million, one hundred thirty-one thousand, four hundred twenty-nine".