390347117 has 2 divisors, whose sum is σ = 390347118. Its totient is φ = 390347116.

The previous prime is 390347063. The next prime is 390347129. The reversal of 390347117 is 711743093.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240064036 + 150283081 = 15494^2 + 12259^2 .

It is a cyclic number.

It is not a de Polignac number, because 390347117 - 2¹⁶ = 390281581 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390347197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195173558 + 195173559.

It is an arithmetic number, because the mean of its divisors is an integer number (195173559).

Almost surely, 2^390347117 is an apocalyptic number.

It is an amenable number.

390347117 is a deficient number, since it is larger than the sum of its proper divisors (1).

390347117 is an equidigital number, since it uses as much as digits as its factorization.

390347117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 390347117 is about 19757.2041797416. The cubic root of 390347117 is about 730.8310526714.

The spelling of 390347117 in words is "three hundred ninety million, three hundred forty-seven thousand, one hundred seventeen".