1390922976791 has 2 divisors, whose sum is σ = 1390922976792. Its totient is φ = 1390922976790.

The previous prime is 1390922976749. The next prime is 1390922976827. The reversal of 1390922976791 is 1976792290931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1390922976791 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1390922970791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695461488395 + 695461488396.

It is an arithmetic number, because the mean of its divisors is an integer number (695461488396).

Almost surely, 2^{1390922976791} is an apocalyptic number.

1390922976791 is a deficient number, since it is larger than the sum of its proper divisors (1).

1390922976791 is an equidigital number, since it uses as much as digits as its factorization.

1390922976791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23147208, while the sum is 65.

The spelling of 1390922976791 in words is "one trillion, three hundred ninety billion, nine hundred twenty-two million, nine hundred seventy-six thousand, seven hundred ninety-one".