392631139349 has 2 divisors, whose sum is σ = 392631139350. Its totient is φ = 392631139348.

The previous prime is 392631139289. The next prime is 392631139387. The reversal of 392631139349 is 943931136293.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225489170449 + 167141968900 = 474857^2 + 408830^2 .

It is an emirp because it is prime and its reverse (943931136293) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 392631139349 - 2²⁸ = 392362703893 is a prime.

It is a super-2 number, since 2×392631139349² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 392631139349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (392631139049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196315569674 + 196315569675.

It is an arithmetic number, because the mean of its divisors is an integer number (196315569675).

Almost surely, 2^392631139349 is an apocalyptic number.

It is an amenable number.

392631139349 is a deficient number, since it is larger than the sum of its proper divisors (1).

392631139349 is an equidigital number, since it uses as much as digits as its factorization.

392631139349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2834352, while the sum is 53.

The spelling of 392631139349 in words is "three hundred ninety-two billion, six hundred thirty-one million, one hundred thirty-nine thousand, three hundred forty-nine".