790117409 has 2 divisors, whose sum is σ = 790117410. Its totient is φ = 790117408.

The previous prime is 790117397. The next prime is 790117411. The reversal of 790117409 is 904711097.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 779973184 + 10144225 = 27928^2 + 3185^2 .

It is a cyclic number.

It is not a de Polignac number, because 790117409 - 2²⁴ = 773340193 is a prime.

Together with 790117411, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (790117709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395058704 + 395058705.

It is an arithmetic number, because the mean of its divisors is an integer number (395058705).

Almost surely, 2^790117409 is an apocalyptic number.

It is an amenable number.

790117409 is a deficient number, since it is larger than the sum of its proper divisors (1).

790117409 is an equidigital number, since it uses as much as digits as its factorization.

790117409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 38.

The square root of 790117409 is about 28109.0271798937. The cubic root of 790117409 is about 924.4793403950.

The spelling of 790117409 in words is "seven hundred ninety million, one hundred seventeen thousand, four hundred nine".