9779797 has 2 divisors, whose sum is σ = 9779798. Its totient is φ = 9779796.

The previous prime is 9779779. The next prime is 9779801. The reversal of 9779797 is 7979779.

9779797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (9779779) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9771876 + 7921 = 3126^2 + 89^2 .

It is an emirp because it is prime and its reverse (7979779) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9779797 - 2¹¹ = 9777749 is a prime.

It is a super-2 number, since 2×9779797² = 191288858722418, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9779597) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4889898 + 4889899.

It is an arithmetic number, because the mean of its divisors is an integer number (4889899).

Almost surely, 2^9779797 is an apocalyptic number.

It is an amenable number.

9779797 is a deficient number, since it is larger than the sum of its proper divisors (1).

9779797 is an equidigital number, since it uses as much as digits as its factorization.

9779797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1750329, while the sum is 55.

The square root of 9779797 is about 3127.2666979329. The cubic root of 9779797 is about 213.8503408152.

The spelling of 9779797 in words is "nine million, seven hundred seventy-nine thousand, seven hundred ninety-seven".