290990 has 16 divisors (see below), whose sum is σ = 598752. Its totient is φ = 99744.

The previous prime is 290987. The next prime is 290993. The reversal of 290990 is 99092.

It is an interprime number because it is at equal distance from previous prime (290987) and next prime (290993).

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 290990.

It is not an unprimeable number, because it can be changed into a prime (290993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2009 + ... + 2148.

It is an arithmetic number, because the mean of its divisors is an integer number (37422).

2²⁹⁰⁹⁹⁰ is an apocalyptic number.

290990 is an abundant number, since it is smaller than the sum of its proper divisors (307762).

It is a weird number, because it is abundant, but not a pseudoperfect number.

290990 is a wasteful number, since it uses less digits than its factorization.

290990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4171.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 290990 is about 539.4348894908. The cubic root of 290990 is about 66.2662947933.

The spelling of 290990 in words is "two hundred ninety thousand, nine hundred ninety".