7222879 has 4 divisors (see below), whose sum is σ = 7228440. Its totient is φ = 7217320.

The previous prime is 7222849. The next prime is 7222903. The reversal of 7222879 is 9782227.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7222879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7222849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324 + ... + 3814.

It is an arithmetic number, because the mean of its divisors is an integer number (1807110).

Almost surely, 2^7222879 is an apocalyptic number.

7222879 is a deficient number, since it is larger than the sum of its proper divisors (5561).

7222879 is a wasteful number, since it uses less digits than its factorization.

7222879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5560.

The product of its digits is 28224, while the sum is 37.

The square root of 7222879 is about 2687.5414415409. The cubic root of 7222879 is about 193.3021924344.

The spelling of 7222879 in words is "seven million, two hundred twenty-two thousand, eight hundred seventy-nine".