74289 has 4 divisors (see below), whose sum is σ = 99056. Its totient is φ = 49524.

The previous prime is 74287. The next prime is 74293. The reversal of 74289 is 98247.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98247 = 3 ⋅32749.

It is not a de Polignac number, because 74289 - 2¹ = 74287 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

74289 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (74287) 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, 12379 + ... + 12384.

It is an arithmetic number, because the mean of its divisors is an integer number (24764).

2⁷⁴²⁸⁹ is an apocalyptic number.

It is an amenable number.

74289 is a deficient number, since it is larger than the sum of its proper divisors (24767).

74289 is a wasteful number, since it uses less digits than its factorization.

74289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24766.

The product of its digits is 4032, while the sum is 30.

The square root of 74289 is about 272.5600851189. The cubic root of 74289 is about 42.0379475630.

It can be divided in two parts, 74 and 289, that added together give a palindrome (363).

The spelling of 74289 in words is "seventy-four thousand, two hundred eighty-nine".