89131433 has 2 divisors, whose sum is σ = 89131434. Its totient is φ = 89131432.

The previous prime is 89131429. The next prime is 89131481. The reversal of 89131433 is 33413198.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49730704 + 39400729 = 7052^2 + 6277^2 .

It is a cyclic number.

It is not a de Polignac number, because 89131433 - 2² = 89131429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89131433.

It is not a weakly prime, because it can be changed into another prime (89131403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44565716 + 44565717.

It is an arithmetic number, because the mean of its divisors is an integer number (44565717).

Almost surely, 2^89131433 is an apocalyptic number.

It is an amenable number.

89131433 is a deficient number, since it is larger than the sum of its proper divisors (1).

89131433 is an equidigital number, since it uses as much as digits as its factorization.

89131433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 32.

The square root of 89131433 is about 9440.9444972418. The cubic root of 89131433 is about 446.6941822979.

The spelling of 89131433 in words is "eighty-nine million, one hundred thirty-one thousand, four hundred thirty-three".