290005 has 8 divisors (see below), whose sum is σ = 359424. Its totient is φ = 224400.

The previous prime is 289999. The next prime is 290011. The reversal of 290005 is 500092.

It is an interprime number because it is at equal distance from previous prime (289999) and next prime (290011).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 290005 - 2⁵ = 289973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 781 + ... + 1090.

It is an arithmetic number, because the mean of its divisors is an integer number (44928).

2²⁹⁰⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

290005 is a deficient number, since it is larger than the sum of its proper divisors (69419).

290005 is a wasteful number, since it uses less digits than its factorization.

290005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 290005 is about 538.5211230769. The cubic root of 290005 is about 66.1914398865.

Adding to 290005 its reverse (500092), we get a palindrome (790097).

The spelling of 290005 in words is "two hundred ninety thousand, five".