290465 has 16 divisors (see below), whose sum is σ = 409728. Its totient is φ = 193536.

The previous prime is 290447. The next prime is 290471. The reversal of 290465 is 564092.

It is not a de Polignac number, because 290465 - 2⁸ = 290209 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 290465.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1409 + ... + 1601.

It is an arithmetic number, because the mean of its divisors is an integer number (25608).

2²⁹⁰⁴⁶⁵ is an apocalyptic number.

It is an amenable number.

290465 is a deficient number, since it is larger than the sum of its proper divisors (119263).

290465 is a wasteful number, since it uses less digits than its factorization.

290465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 290465 is about 538.9480494445. The cubic root of 290465 is about 66.2264185682.

The spelling of 290465 in words is "two hundred ninety thousand, four hundred sixty-five".