289946 has 4 divisors (see below), whose sum is σ = 434922. Its totient is φ = 144972.

The previous prime is 289937. The next prime is 289951. The reversal of 289946 is 649982.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 649982 = 2 ⋅324991.

It can be written as a sum of positive squares in only one way, i.e., 286225 + 3721 = 535^2 + 61^2 .

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 289946.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72485 + ... + 72488.

2²⁸⁹⁹⁴⁶ is an apocalyptic number.

289946 is a deficient number, since it is larger than the sum of its proper divisors (144976).

289946 is a wasteful number, since it uses less digits than its factorization.

289946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144975.

The product of its digits is 31104, while the sum is 38.

The square root of 289946 is about 538.4663406379. The cubic root of 289946 is about 66.1869508146.

The spelling of 289946 in words is "two hundred eighty-nine thousand, nine hundred forty-six".