89251289 has 4 divisors (see below), whose sum is σ = 91663524. Its totient is φ = 86839056.

The previous prime is 89251243. The next prime is 89251291. The reversal of 89251289 is 98215298.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78623689 + 10627600 = 8867^2 + 3260^2 .

It is a cyclic number.

It is not a de Polignac number, because 89251289 - 2²⁰ = 88202713 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (89251889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1206062 + ... + 1206135.

It is an arithmetic number, because the mean of its divisors is an integer number (22915881).

Almost surely, 2^89251289 is an apocalyptic number.

It is an amenable number.

89251289 is a deficient number, since it is larger than the sum of its proper divisors (2412235).

89251289 is a wasteful number, since it uses less digits than its factorization.

89251289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412234.

The product of its digits is 103680, while the sum is 44.

The square root of 89251289 is about 9447.2900347137. The cubic root of 89251289 is about 446.8943174462.

The spelling of 89251289 in words is "eighty-nine million, two hundred fifty-one thousand, two hundred eighty-nine".