390618071 has 2 divisors, whose sum is σ = 390618072. Its totient is φ = 390618070.

The previous prime is 390618049. The next prime is 390618077. The reversal of 390618071 is 170816093.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-390618071 is a prime.

It is a super-2 number, since 2×390618071² = 305164954783522082, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390618077) 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, 195309035 + 195309036.

It is an arithmetic number, because the mean of its divisors is an integer number (195309036).

Almost surely, 2^390618071 is an apocalyptic number.

390618071 is a deficient number, since it is larger than the sum of its proper divisors (1).

390618071 is an equidigital number, since it uses as much as digits as its factorization.

390618071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 390618071 is about 19764.0600838998. The cubic root of 390618071 is about 731.0001122836. Note that the first 3 decimals are identical.

The spelling of 390618071 in words is "three hundred ninety million, six hundred eighteen thousand, seventy-one".