89279289 has 12 divisors (see below), whose sum is σ = 140682672. Its totient is φ = 54108600.

The previous prime is 89279269. The next prime is 89279299. The reversal of 89279289 is 98297298.

It is not a de Polignac number, because 89279289 - 2²³ = 80890681 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (89279209) 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, 450807 + ... + 451004.

It is an arithmetic number, because the mean of its divisors is an integer number (11723556).

Almost surely, 2^89279289 is an apocalyptic number.

It is an amenable number.

89279289 is a deficient number, since it is larger than the sum of its proper divisors (51403383).

89279289 is a wasteful number, since it uses less digits than its factorization.

89279289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901828 (or 901825 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 89279289 is about 9448.7718249516. The cubic root of 89279289 is about 446.9410459313.

Subtracting 89279289 from its reverse (98297298), we obtain a square (9018009 = 3003²).

It can be divided in two parts, 89 and 279289, that added together give a triangular number (279378 = T₇₄₇).

The spelling of 89279289 in words is "eighty-nine million, two hundred seventy-nine thousand, two hundred eighty-nine".