791071901 has 2 divisors, whose sum is σ = 791071902. Its totient is φ = 791071900.

The previous prime is 791071861. The next prime is 791071907. The reversal of 791071901 is 109170197.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 791071876 + 25 = 28126^2 + 5^2 .

It is an emirp because it is prime and its reverse (109170197) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-791071901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (791071907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395535950 + 395535951.

It is an arithmetic number, because the mean of its divisors is an integer number (395535951).

Almost surely, 2^791071901 is an apocalyptic number.

It is an amenable number.

791071901 is a deficient number, since it is larger than the sum of its proper divisors (1).

791071901 is an equidigital number, since it uses as much as digits as its factorization.

791071901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3969, while the sum is 35.

The square root of 791071901 is about 28126.0004444286. Note that the first 3 decimals coincide. The cubic root of 791071901 is about 924.8514593717.

The spelling of 791071901 in words is "seven hundred ninety-one million, seventy-one thousand, nine hundred one".