390320221079 has 2 divisors, whose sum is σ = 390320221080. Its totient is φ = 390320221078.

The previous prime is 390320221073. The next prime is 390320221091. The reversal of 390320221079 is 970122023093.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-390320221079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390320221073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195160110539 + 195160110540.

It is an arithmetic number, because the mean of its divisors is an integer number (195160110540).

Almost surely, 2^390320221079 is an apocalyptic number.

390320221079 is a deficient number, since it is larger than the sum of its proper divisors (1).

390320221079 is an equidigital number, since it uses as much as digits as its factorization.

390320221079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 38.

The spelling of 390320221079 in words is "three hundred ninety billion, three hundred twenty million, two hundred twenty-one thousand, seventy-nine".