290766089 has 2 divisors, whose sum is σ = 290766090. Its totient is φ = 290766088.

The previous prime is 290766071. The next prime is 290766097. The reversal of 290766089 is 980667092.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200364025 + 90402064 = 14155^2 + 9508^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-290766089 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (290766389) 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 as a sum of consecutive naturals, namely, 145383044 + 145383045.

It is an arithmetic number, because the mean of its divisors is an integer number (145383045).

Almost surely, 2^290766089 is an apocalyptic number.

It is an amenable number.

290766089 is a deficient number, since it is larger than the sum of its proper divisors (1).

290766089 is an equidigital number, since it uses as much as digits as its factorization.

290766089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 290766089 is about 17051.8646780931. The cubic root of 290766089 is about 662.4929356788.

The spelling of 290766089 in words is "two hundred ninety million, seven hundred sixty-six thousand, eighty-nine".