289930 has 16 divisors (see below), whose sum is σ = 529920. Its totient is φ = 114192.

The previous prime is 289897. The next prime is 289937. The reversal of 289930 is 39982.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 289892 and 289901.

It is not an unprimeable number, because it can be changed into a prime (289937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 607 + ... + 973.

It is an arithmetic number, because the mean of its divisors is an integer number (33120).

2²⁸⁹⁹³⁰ is an apocalyptic number.

289930 is a deficient number, since it is larger than the sum of its proper divisors (239990).

289930 is a wasteful number, since it uses less digits than its factorization.

289930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 289930 is about 538.4514834226. The cubic root of 289930 is about 66.1857333343.

The spelling of 289930 in words is "two hundred eighty-nine thousand, nine hundred thirty".