89272289 has 2 divisors, whose sum is σ = 89272290. Its totient is φ = 89272288.

The previous prime is 89272259. The next prime is 89272297. The reversal of 89272289 is 98227298.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64272289 + 25000000 = 8017^2 + 5000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89272289 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (89272229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44636144 + 44636145.

It is an arithmetic number, because the mean of its divisors is an integer number (44636145).

Almost surely, 2^89272289 is an apocalyptic number.

It is an amenable number.

89272289 is a deficient number, since it is larger than the sum of its proper divisors (1).

89272289 is an equidigital number, since it uses as much as digits as its factorization.

89272289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 47.

The square root of 89272289 is about 9448.4013991786. The cubic root of 89272289 is about 446.9293647261.

The spelling of 89272289 in words is "eighty-nine million, two hundred seventy-two thousand, two hundred eighty-nine".