89284257 has 12 divisors (see below), whose sum is σ = 129048660. Its totient is φ = 59484768.

The previous prime is 89284253. The next prime is 89284313. The reversal of 89284257 is 75248298.

It can be written as a sum of positive squares in 2 ways, for example, as 31539456 + 57744801 = 5616^2 + 7599^2 .

It is not a de Polignac number, because 89284257 - 2² = 89284253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89284253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23323 + ... + 26879.

It is an arithmetic number, because the mean of its divisors is an integer number (10754055).

Almost surely, 2^89284257 is an apocalyptic number.

It is an amenable number.

89284257 is a deficient number, since it is larger than the sum of its proper divisors (39764403).

89284257 is a wasteful number, since it uses less digits than its factorization.

89284257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6352 (or 6349 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 89284257 is about 9449.0347126042. The cubic root of 89284257 is about 446.9493358791.

The spelling of 89284257 in words is "eighty-nine million, two hundred eighty-four thousand, two hundred fifty-seven".