390879841057 has 2 divisors, whose sum is σ = 390879841058. Its totient is φ = 390879841056.

The previous prime is 390879841007. The next prime is 390879841091. The reversal of 390879841057 is 750148978093.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 257169680161 + 133710160896 = 507119^2 + 365664^2 .

It is a cyclic number.

It is not a de Polignac number, because 390879841057 - 2¹⁵ = 390879808289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 390879840986 and 390879841004.

It is not a weakly prime, because it can be changed into another prime (390879841007) 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, 195439920528 + 195439920529.

It is an arithmetic number, because the mean of its divisors is an integer number (195439920529).

Almost surely, 2^390879841057 is an apocalyptic number.

It is an amenable number.

390879841057 is a deficient number, since it is larger than the sum of its proper divisors (1).

390879841057 is an equidigital number, since it uses as much as digits as its factorization.

390879841057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15240960, while the sum is 61.

The spelling of 390879841057 in words is "three hundred ninety billion, eight hundred seventy-nine million, eight hundred forty-one thousand, fifty-seven".