7828887317 has 2 divisors, whose sum is σ = 7828887318. Its totient is φ = 7828887316.

The previous prime is 7828887259. The next prime is 7828887373. The reversal of 7828887317 is 7137888287.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7305804676 + 523082641 = 85474^2 + 22871^2 .

It is a cyclic number.

It is not a de Polignac number, because 7828887317 - 2⁸ = 7828887061 is a prime.

It is a super-2 number, since 2×7828887317² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7828877317) 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, 3914443658 + 3914443659.

It is an arithmetic number, because the mean of its divisors is an integer number (3914443659).

Almost surely, 2^7828887317 is an apocalyptic number.

It is an amenable number.

7828887317 is a deficient number, since it is larger than the sum of its proper divisors (1).

7828887317 is an equidigital number, since it uses as much as digits as its factorization.

7828887317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8429568, while the sum is 59.

The square root of 7828887317 is about 88480.9997513590. Note that the first 3 decimals coincide. The cubic root of 7828887317 is about 1985.6377190751.

The spelling of 7828887317 in words is "seven billion, eight hundred twenty-eight million, eight hundred eighty-seven thousand, three hundred seventeen".