290615249 has 2 divisors, whose sum is σ = 290615250. Its totient is φ = 290615248.

The previous prime is 290615219. The next prime is 290615329. The reversal of 290615249 is 942516092.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222964624 + 67650625 = 14932^2 + 8225^2 .

It is a cyclic number.

It is not a de Polignac number, because 290615249 - 2²⁸ = 22179793 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (290615209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145307624 + 145307625.

It is an arithmetic number, because the mean of its divisors is an integer number (145307625).

Almost surely, 2^290615249 is an apocalyptic number.

It is an amenable number.

290615249 is a deficient number, since it is larger than the sum of its proper divisors (1).

290615249 is an equidigital number, since it uses as much as digits as its factorization.

290615249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 290615249 is about 17047.4411276297. The cubic root of 290615249 is about 662.3783559262.

The spelling of 290615249 in words is "two hundred ninety million, six hundred fifteen thousand, two hundred forty-nine".