290390 has 16 divisors (see below), whose sum is σ = 531360. Its totient is φ = 114240.

The previous prime is 290383. The next prime is 290393. The reversal of 290390 is 93092.

290390 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290393) by changing a digit.

290390 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506 + ... + 914.

It is an arithmetic number, because the mean of its divisors is an integer number (33210).

2²⁹⁰³⁹⁰ is an apocalyptic number.

290390 is a deficient number, since it is larger than the sum of its proper divisors (240970).

290390 is a wasteful number, since it uses less digits than its factorization.

290390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 290390 is about 538.8784649622. The cubic root of 290390 is about 66.2207180433.

The spelling of 290390 in words is "two hundred ninety thousand, three hundred ninety".