289942 has 8 divisors (see below), whose sum is σ = 450000. Its totient is φ = 139944.

The previous prime is 289937. The next prime is 289951. The reversal of 289942 is 249982.

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

It is a pancake number, because a pancake can be divided into 289942 parts by 761 straight cuts.

It is a junction number, because it is equal to n+sod(n) for n = 289898 and 289907.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 289942.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2442 + ... + 2557.

It is an arithmetic number, because the mean of its divisors is an integer number (56250).

2²⁸⁹⁹⁴² is an apocalyptic number.

289942 is a deficient number, since it is larger than the sum of its proper divisors (160058).

289942 is a wasteful number, since it uses less digits than its factorization.

289942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5030.

The product of its digits is 10368, while the sum is 34.

The square root of 289942 is about 538.4626263725. The cubic root of 289942 is about 66.1866464487.

The spelling of 289942 in words is "two hundred eighty-nine thousand, nine hundred forty-two".