7228979 has 2 divisors, whose sum is σ = 7228980. Its totient is φ = 7228978.

The previous prime is 7228951. The next prime is 7228981. The reversal of 7228979 is 9798227.

It is a strong prime.

It is an emirp because it is prime and its reverse (9798227) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7228979 is a prime.

It is a super-3 number, since 3×7228979³ (a number of 22 digits) contains 333 as substring.

It is a Sophie Germain prime.

Together with 7228981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7228909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3614489 + 3614490.

It is an arithmetic number, because the mean of its divisors is an integer number (3614490).

Almost surely, 2^7228979 is an apocalyptic number.

7228979 is a deficient number, since it is larger than the sum of its proper divisors (1).

7228979 is an equidigital number, since it uses as much as digits as its factorization.

7228979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 44.

The square root of 7228979 is about 2688.6760682537. The cubic root of 7228979 is about 193.3565941758.

The spelling of 7228979 in words is "seven million, two hundred twenty-eight thousand, nine hundred seventy-nine".