89739 has 18 divisors (see below), whose sum is σ = 142740. Its totient is φ = 54288.

The previous prime is 89689. The next prime is 89753. The reversal of 89739 is 93798.

89739 = 77² + 78² + ... + 89².

It is not a de Polignac number, because 89739 - 2⁷ = 89611 is a prime.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (89759) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1492 + ... + 1550.

It is an arithmetic number, because the mean of its divisors is an integer number (7930).

2⁸⁹⁷³⁹ is an apocalyptic number.

89739 is a deficient number, since it is larger than the sum of its proper divisors (53001).

89739 is a wasteful number, since it uses less digits than its factorization.

89739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 75 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 89739 is about 299.5646841669. The cubic root of 89739 is about 44.7706852759.

It can be divided in two parts, 89 and 739, that added together give a palindrome (828).

The spelling of 89739 in words is "eighty-nine thousand, seven hundred thirty-nine".