799744081 has 2 divisors, whose sum is σ = 799744082. Its totient is φ = 799744080.

The previous prime is 799744079. The next prime is 799744087. The reversal of 799744081 is 180447997.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 459673600 + 340070481 = 21440^2 + 18441^2 .

It is a cyclic number.

It is not a de Polignac number, because 799744081 - 2¹ = 799744079 is a prime.

It is a super-2 number, since 2×799744081² = 1279181190189069122, which contains 22 as substring.

Together with 799744079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (799744087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399872040 + 399872041.

It is an arithmetic number, because the mean of its divisors is an integer number (399872041).

Almost surely, 2^799744081 is an apocalyptic number.

It is an amenable number.

799744081 is a deficient number, since it is larger than the sum of its proper divisors (1).

799744081 is an equidigital number, since it uses as much as digits as its factorization.

799744081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 799744081 is about 28279.7468340861. The cubic root of 799744081 is about 928.2187669341.

The spelling of 799744081 in words is "seven hundred ninety-nine million, seven hundred forty-four thousand, eighty-one".