7916869217 has 2 divisors, whose sum is σ = 7916869218. Its totient is φ = 7916869216.

The previous prime is 7916869193. The next prime is 7916869237. The reversal of 7916869217 is 7129686197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5570532496 + 2346336721 = 74636^2 + 48439^2 .

It is a cyclic number.

It is not a de Polignac number, because 7916869217 - 2⁶ = 7916869153 is a prime.

It is not a weakly prime, because it can be changed into another prime (7916869237) 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, 3958434608 + 3958434609.

It is an arithmetic number, because the mean of its divisors is an integer number (3958434609).

Almost surely, 2^7916869217 is an apocalyptic number.

It is an amenable number.

7916869217 is a deficient number, since it is larger than the sum of its proper divisors (1).

7916869217 is an equidigital number, since it uses as much as digits as its factorization.

7916869217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 56.

The square root of 7916869217 is about 88976.7903275905. The cubic root of 7916869217 is about 1993.0482996770.

The spelling of 7916869217 in words is "seven billion, nine hundred sixteen million, eight hundred sixty-nine thousand, two hundred seventeen".