290109 has 4 divisors (see below), whose sum is σ = 386816. Its totient is φ = 193404.

The previous prime is 290107. The next prime is 290113. The reversal of 290109 is 901092.

It is a happy number.

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 290109 - 2¹ = 290107 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

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 290109.

It is not an unprimeable number, because it can be changed into a prime (290107) 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, 48349 + ... + 48354.

It is an arithmetic number, because the mean of its divisors is an integer number (96704).

2²⁹⁰¹⁰⁹ is an apocalyptic number.

It is an amenable number.

290109 is a deficient number, since it is larger than the sum of its proper divisors (96707).

290109 is an equidigital number, since it uses as much as digits as its factorization.

290109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96706.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 290109 is about 538.6176751649. The cubic root of 290109 is about 66.1993513443.

The spelling of 290109 in words is "two hundred ninety thousand, one hundred nine".