774944449427 has 2 divisors, whose sum is σ = 774944449428. Its totient is φ = 774944449426.

The previous prime is 774944449343. The next prime is 774944449441. The reversal of 774944449427 is 724944449477.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-774944449427 is a prime.

It is not a weakly prime, because it can be changed into another prime (774944440427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387472224713 + 387472224714.

It is an arithmetic number, because the mean of its divisors is an integer number (387472224714).

Almost surely, 2^774944449427 is an apocalyptic number.

774944449427 is a deficient number, since it is larger than the sum of its proper divisors (1).

774944449427 is an equidigital number, since it uses as much as digits as its factorization.

774944449427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 227598336, while the sum is 65.

The spelling of 774944449427 in words is "seven hundred seventy-four billion, nine hundred forty-four million, four hundred forty-nine thousand, four hundred twenty-seven".