289738 has 8 divisors (see below), whose sum is σ = 436932. Its totient is φ = 144096.

The previous prime is 289733. The next prime is 289741. The reversal of 289738 is 837982.

It can be written as a sum of positive squares in 2 ways, for example, as 288369 + 1369 = 537^2 + 37^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 289697 and 289706.

It is not an unprimeable number, because it can be changed into a prime (289733) 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, 406 + ... + 862.

2²⁸⁹⁷³⁸ is an apocalyptic number.

289738 is a deficient number, since it is larger than the sum of its proper divisors (147194).

289738 is a wasteful number, since it uses less digits than its factorization.

289738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776.

The product of its digits is 24192, while the sum is 37.

The square root of 289738 is about 538.2731648522. The cubic root of 289738 is about 66.1711200748.

The spelling of 289738 in words is "two hundred eighty-nine thousand, seven hundred thirty-eight".