89749 has 8 divisors (see below), whose sum is σ = 100800. Its totient is φ = 79200.

The previous prime is 89689. The next prime is 89753. The reversal of 89749 is 94798.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 89749 - 2⁹ = 89237 is a prime.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 352 + ... + 550.

It is an arithmetic number, because the mean of its divisors is an integer number (12600).

2⁸⁹⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

89749 is a deficient number, since it is larger than the sum of its proper divisors (11051).

89749 is a wasteful number, since it uses less digits than its factorization.

89749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251.

The product of its digits is 18144, while the sum is 37.

The square root of 89749 is about 299.5813745879. The cubic root of 89749 is about 44.7723482103.

It can be divided in two parts, 897 and 49, that added together give a triangular number (946 = T₄₃).

The spelling of 89749 in words is "eighty-nine thousand, seven hundred forty-nine".