390936467281 has 2 divisors, whose sum is σ = 390936467282. Its totient is φ = 390936467280.

The previous prime is 390936467269. The next prime is 390936467287. The reversal of 390936467281 is 182764639093.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 387775216656 + 3161250625 = 622716^2 + 56225^2 .

It is a cyclic number.

It is not a de Polignac number, because 390936467281 - 2²⁹ = 390399596369 is a prime.

It is a super-2 number, since 2×390936467281² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (390936467287) 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, 195468233640 + 195468233641.

It is an arithmetic number, because the mean of its divisors is an integer number (195468233641).

Almost surely, 2^390936467281 is an apocalyptic number.

It is an amenable number.

390936467281 is a deficient number, since it is larger than the sum of its proper divisors (1).

390936467281 is an equidigital number, since it uses as much as digits as its factorization.

390936467281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11757312, while the sum is 58.

The spelling of 390936467281 in words is "three hundred ninety billion, nine hundred thirty-six million, four hundred sixty-seven thousand, two hundred eighty-one".