7222979 has 4 divisors (see below), whose sum is σ = 7235376. Its totient is φ = 7210584.

The previous prime is 7222939. The next prime is 7222981. The reversal of 7222979 is 9792227.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7222979 - 2⁸ = 7222723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7222939) 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 in 3 ways as a sum of consecutive naturals, for example, 5279 + ... + 6504.

It is an arithmetic number, because the mean of its divisors is an integer number (1808844).

Almost surely, 2^7222979 is an apocalyptic number.

7222979 is a deficient number, since it is larger than the sum of its proper divisors (12397).

7222979 is a wasteful number, since it uses less digits than its factorization.

7222979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12396.

The product of its digits is 31752, while the sum is 38.

The square root of 7222979 is about 2687.5600458408. The cubic root of 7222979 is about 193.3030845131.

The spelling of 7222979 in words is "seven million, two hundred twenty-two thousand, nine hundred seventy-nine".