7222987279 has 4 divisors (see below), whose sum is σ = 7224686680. Its totient is φ = 7221287880.

The previous prime is 7222987271. The next prime is 7222987309. The reversal of 7222987279 is 9727892227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9727892227 = 1201 ⋅8099827.

It is a cyclic number.

It is not a de Polignac number, because 7222987279 - 2³ = 7222987271 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 (7222987271) 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, 843309 + ... + 851830.

It is an arithmetic number, because the mean of its divisors is an integer number (1806171670).

Almost surely, 2^7222987279 is an apocalyptic number.

7222987279 is a deficient number, since it is larger than the sum of its proper divisors (1699401).

7222987279 is a wasteful number, since it uses less digits than its factorization.

7222987279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1699400.

The product of its digits is 3556224, while the sum is 55.

The square root of 7222987279 is about 84988.1596400346. The cubic root of 7222987279 is about 1933.0315836797.

The spelling of 7222987279 in words is "seven billion, two hundred twenty-two million, nine hundred eighty-seven thousand, two hundred seventy-nine".