290289 has 4 divisors (see below), whose sum is σ = 387056. Its totient is φ = 193524.

The previous prime is 290249. The next prime is 290317. The reversal of 290289 is 982092.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 290289 - 2⁷ = 290161 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (290209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48379 + ... + 48384.

It is an arithmetic number, because the mean of its divisors is an integer number (96764).

2²⁹⁰²⁸⁹ is an apocalyptic number.

It is an amenable number.

290289 is a deficient number, since it is larger than the sum of its proper divisors (96767).

290289 is an equidigital number, since it uses as much as digits as its factorization.

290289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96766.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 290289 is about 538.7847436593. The cubic root of 290289 is about 66.2130397852.

The spelling of 290289 in words is "two hundred ninety thousand, two hundred eighty-nine".