290945969 has 2 divisors, whose sum is σ = 290945970. Its totient is φ = 290945968.

The previous prime is 290945957. The next prime is 290945989. The reversal of 290945969 is 969549092.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 283585600 + 7360369 = 16840^2 + 2713^2 .

It is a cyclic number.

It is not a de Polignac number, because 290945969 - 2²⁰ = 289897393 is a prime.

It is a super-2 number, since 2×290945969² = 169299113754697922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 290945969.

It is not a weakly prime, because it can be changed into another prime (290945909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145472984 + 145472985.

It is an arithmetic number, because the mean of its divisors is an integer number (145472985).

Almost surely, 2^290945969 is an apocalyptic number.

It is an amenable number.

290945969 is a deficient number, since it is larger than the sum of its proper divisors (1).

290945969 is an equidigital number, since it uses as much as digits as its factorization.

290945969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1574640, while the sum is 53.

The square root of 290945969 is about 17057.1383590566. The cubic root of 290945969 is about 662.6295227475.

The spelling of 290945969 in words is "two hundred ninety million, nine hundred forty-five thousand, nine hundred sixty-nine".