390391775369 has 2 divisors, whose sum is σ = 390391775370. Its totient is φ = 390391775368.

The previous prime is 390391775357. The next prime is 390391775429. The reversal of 390391775369 is 963577193093.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 390000250000 + 391525369 = 624500^2 + 19787^2 .

It is a cyclic number.

It is not a de Polignac number, because 390391775369 - 2¹⁶ = 390391709833 is a prime.

It is a super-2 number, since 2×390391775369² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (390396775369) 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, 195195887684 + 195195887685.

It is an arithmetic number, because the mean of its divisors is an integer number (195195887685).

Almost surely, 2^390391775369 is an apocalyptic number.

It is an amenable number.

390391775369 is a deficient number, since it is larger than the sum of its proper divisors (1).

390391775369 is an equidigital number, since it uses as much as digits as its factorization.

390391775369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28934010, while the sum is 62.

The spelling of 390391775369 in words is "three hundred ninety billion, three hundred ninety-one million, seven hundred seventy-five thousand, three hundred sixty-nine".