7999772852 has 6 divisors (see below), whose sum is σ = 13999602498. Its totient is φ = 3999886424.

The previous prime is 7999772839. The next prime is 7999772857. The reversal of 7999772852 is 2582779997.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4448089636 + 3551683216 = 66694^2 + 59596^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7999772857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999971603 + ... + 999971610.

It is an arithmetic number, because the mean of its divisors is an integer number (2333267083).

Almost surely, 2^7999772852 is an apocalyptic number.

It is an amenable number.

7999772852 is a deficient number, since it is larger than the sum of its proper divisors (5999829646).

7999772852 is a wasteful number, since it uses less digits than its factorization.

7999772852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999943217 (or 1999943215 counting only the distinct ones).

The product of its digits is 40007520, while the sum is 65.

The square root of 7999772852 is about 89441.4492950556. The cubic root of 7999772852 is about 1999.9810708208.

The spelling of 7999772852 in words is "seven billion, nine hundred ninety-nine million, seven hundred seventy-two thousand, eight hundred fifty-two".