289774 has 4 divisors (see below), whose sum is σ = 434664. Its totient is φ = 144886.

The previous prime is 289771. The next prime is 289789. The reversal of 289774 is 477982.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 477982 = 2 ⋅238991.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72442 + ... + 72445.

It is an arithmetic number, because the mean of its divisors is an integer number (108666).

2²⁸⁹⁷⁷⁴ is an apocalyptic number.

289774 is a deficient number, since it is larger than the sum of its proper divisors (144890).

289774 is a wasteful number, since it uses less digits than its factorization.

289774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144889.

The product of its digits is 28224, while the sum is 37.

The square root of 289774 is about 538.3066040836. The cubic root of 289774 is about 66.1738605526.

The spelling of 289774 in words is "two hundred eighty-nine thousand, seven hundred seventy-four".