799597109 has 2 divisors, whose sum is σ = 799597110. Its totient is φ = 799597108.

The previous prime is 799597081. The next prime is 799597111. The reversal of 799597109 is 901795997.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 677560900 + 122036209 = 26030^2 + 11047^2 .

It is an emirp because it is prime and its reverse (901795997) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-799597109 is a prime.

Together with 799597111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (799597189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399798554 + 399798555.

It is an arithmetic number, because the mean of its divisors is an integer number (399798555).

Almost surely, 2^799597109 is an apocalyptic number.

It is an amenable number.

799597109 is a deficient number, since it is larger than the sum of its proper divisors (1).

799597109 is an equidigital number, since it uses as much as digits as its factorization.

799597109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1607445, while the sum is 56.

The square root of 799597109 is about 28277.1481765754. The cubic root of 799597109 is about 928.1619026906.

The spelling of 799597109 in words is "seven hundred ninety-nine million, five hundred ninety-seven thousand, one hundred nine".