9772979 has 2 divisors, whose sum is σ = 9772980. Its totient is φ = 9772978.

The previous prime is 9772969. The next prime is 9772981. The reversal of 9772979 is 9792779.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9772979 - 2¹² = 9768883 is a prime.

It is a super-2 number, since 2×9772979² = 191022237068882, which contains 22 as substring.

Together with 9772981, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 12.

It is not a weakly prime, because it can be changed into another prime (9772969) 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, 4886489 + 4886490.

It is an arithmetic number, because the mean of its divisors is an integer number (4886490).

Almost surely, 2^9772979 is an apocalyptic number.

9772979 is a deficient number, since it is larger than the sum of its proper divisors (1).

9772979 is an equidigital number, since it uses as much as digits as its factorization.

9772979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 500094, while the sum is 50.

The square root of 9772979 is about 3126.1764185663. The cubic root of 9772979 is about 213.8006339014.

The spelling of 9772979 in words is "nine million, seven hundred seventy-two thousand, nine hundred seventy-nine".