290797 has 4 divisors (see below), whose sum is σ = 313180. Its totient is φ = 268416.

The previous prime is 290791. The next prime is 290803. The reversal of 290797 is 797092.

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

It is an interprime number because it is at equal distance from previous prime (290791) and next prime (290803).

It can be written as a sum of positive squares in 2 ways, for example, as 84681 + 206116 = 291^2 + 454^2 .

It is a cyclic number.

It is not a de Polignac number, because 290797 - 2⁷ = 290669 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 (290791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11172 + ... + 11197.

It is an arithmetic number, because the mean of its divisors is an integer number (78295).

2²⁹⁰⁷⁹⁷ is an apocalyptic number.

It is an amenable number.

290797 is a deficient number, since it is larger than the sum of its proper divisors (22383).

290797 is a wasteful number, since it uses less digits than its factorization.

290797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22382.

The product of its (nonzero) digits is 7938, while the sum is 34.

The square root of 290797 is about 539.2559689053. The cubic root of 290797 is about 66.2516411128.

The spelling of 290797 in words is "two hundred ninety thousand, seven hundred ninety-seven".