290490077 has 2 divisors, whose sum is σ = 290490078. Its totient is φ = 290490076.

The previous prime is 290490059. The next prime is 290490089. The reversal of 290490077 is 770094092.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 261824761 + 28665316 = 16181^2 + 5354^2 .

It is a cyclic number.

It is not a de Polignac number, because 290490077 - 2¹⁸ = 290227933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 290490077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (290490007) 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, 145245038 + 145245039.

It is an arithmetic number, because the mean of its divisors is an integer number (145245039).

Almost surely, 2^290490077 is an apocalyptic number.

It is an amenable number.

290490077 is a deficient number, since it is larger than the sum of its proper divisors (1).

290490077 is an equidigital number, since it uses as much as digits as its factorization.

290490077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 290490077 is about 17043.7694481004. The cubic root of 290490077 is about 662.2832437686.

The spelling of 290490077 in words is "two hundred ninety million, four hundred ninety thousand, seventy-seven".