290117 has 4 divisors (see below), whose sum is σ = 297996. Its totient is φ = 282240.

The previous prime is 290113. The next prime is 290119. The reversal of 290117 is 711092.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 188356 + 101761 = 434^2 + 319^2 .

It is a cyclic number.

It is not a de Polignac number, because 290117 - 2² = 290113 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3884 + ... + 3957.

It is an arithmetic number, because the mean of its divisors is an integer number (74499).

2²⁹⁰¹¹⁷ is an apocalyptic number.

It is an amenable number.

290117 is a deficient number, since it is larger than the sum of its proper divisors (7879).

290117 is an equidigital number, since it uses as much as digits as its factorization.

290117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7878.

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 290117 is about 538.6251015317. The cubic root of 290117 is about 66.1999598397.

It can be divided in two parts, 290 and 117, that multiplied together give a triangular number (33930 = T₂₆₀).

The spelling of 290117 in words is "two hundred ninety thousand, one hundred seventeen".