7922 has 8 divisors (see below), whose sum is σ = 12636.
Its totient is φ = 3712.
The previous prime is 7919. The next prime is 7927. The reversal of 7922 is 2297.
Subtracting from 7922 its reverse (2297), we obtain a square (5625 = 752).
It can be divided in two parts, 79 and 22, that added together give a palindrome (101).
It is a Cunningham number, because it is equal to 892+1.
It can be written as a sum of positive squares in 2 ways, for example, as 7921 + 1 = 89^2 + 1^2
It is a sphenic number, since it is the product of 3 distinct primes.
Its product of digits (252) is a multiple of the sum of its prime divisors (252).
It is a junction number, because it is equal to n+sod(n) for n = 7894 and 7903.
It is not an unprimeable number, because it can be changed into a prime (7927) 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, 83 + ... + 150.
27922 is an apocalyptic number.
7922 is a deficient number, since it is larger than the sum of its proper divisors (4714).
7922 is a wasteful number, since it uses less digits than its factorization.
7922 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 252.
The product of its digits is 252, while the sum is 20.
The square root of 7922 is about 89.0056178002.
The cubic root of 7922 is about 19.9347875982.
The spelling of 7922 in words is "seven thousand, nine hundred twenty-two".