7839396722 has 4 divisors (see below), whose sum is σ = 11759095086. Its totient is φ = 3919698360.

The previous prime is 7839396703. The next prime is 7839396727. The reversal of 7839396722 is 2276939387.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 6640783081 + 1198613641 = 81491^2 + 34621^2 .

It is a super-2 number, since 2×7839396722² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7839396727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1959849179 + ... + 1959849182.

Almost surely, 2^7839396722 is an apocalyptic number.

7839396722 is a deficient number, since it is larger than the sum of its proper divisors (3919698364).

7839396722 is a wasteful number, since it uses less digits than its factorization.

7839396722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3919698363.

The product of its digits is 6858432, while the sum is 56.

The square root of 7839396722 is about 88540.3677539234. The cubic root of 7839396722 is about 1986.5258206018.

The spelling of 7839396722 in words is "seven billion, eight hundred thirty-nine million, three hundred ninety-six thousand, seven hundred twenty-two".