289990 has 16 divisors (see below), whose sum is σ = 533952. Its totient is φ = 113344.

The previous prime is 289987. The next prime is 289999. The reversal of 289990 is 99982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289999) 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, 162 + ... + 778.

It is an arithmetic number, because the mean of its divisors is an integer number (33372).

2²⁸⁹⁹⁹⁰ is an apocalyptic number.

289990 is a deficient number, since it is larger than the sum of its proper divisors (243962).

289990 is a wasteful number, since it uses less digits than its factorization.

289990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 289990 is about 538.5071958665. The cubic root of 289990 is about 66.1902986547.

The spelling of 289990 in words is "two hundred eighty-nine thousand, nine hundred ninety".