799849777369 has 2 divisors, whose sum is σ = 799849777370. Its totient is φ = 799849777368.

The previous prime is 799849777277. The next prime is 799849777379. The reversal of 799849777369 is 963777948997.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 698494777600 + 101354999769 = 835760^2 + 318363^2 .

It is a cyclic number.

It is not a de Polignac number, because 799849777369 - 2¹³ = 799849769177 is a prime.

It is a super-2 number, since 2×799849777369² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (799849777379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399924888684 + 399924888685.

It is an arithmetic number, because the mean of its divisors is an integer number (399924888685).

Almost surely, 2^799849777369 is an apocalyptic number.

It is an amenable number.

799849777369 is a deficient number, since it is larger than the sum of its proper divisors (1).

799849777369 is an equidigital number, since it uses as much as digits as its factorization.

799849777369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9073705536, while the sum is 85.

The spelling of 799849777369 in words is "seven hundred ninety-nine billion, eight hundred forty-nine million, seven hundred seventy-seven thousand, three hundred sixty-nine".