89287 has 4 divisors (see below), whose sum is σ = 97416. Its totient is φ = 81160.

The previous prime is 89273. The next prime is 89293. The reversal of 89287 is 78298.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 89287 - 2¹⁵ = 56519 is a prime.

89287 is a lucky number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89227) 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, 4048 + ... + 4069.

It is an arithmetic number, because the mean of its divisors is an integer number (24354).

2⁸⁹²⁸⁷ is an apocalyptic number.

89287 is a deficient number, since it is larger than the sum of its proper divisors (8129).

89287 is a wasteful number, since it uses less digits than its factorization.

89287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8128.

The product of its digits is 8064, while the sum is 34.

The square root of 89287 is about 298.8093037374. The cubic root of 89287 is about 44.6953912906.

Subtracting from 89287 its sum of digits (34), we obtain a triangular number (89253 = T₄₂₂).

It can be divided in two parts, 892 and 87, that added together give a palindrome (979).

The spelling of 89287 in words is "eighty-nine thousand, two hundred eighty-seven".