7447744772 has 12 divisors (see below), whose sum is σ = 14036134476. Its totient is φ = 3437420640.

The previous prime is 7447744729. The next prime is 7447744813. The reversal of 7447744772 is 2774477447.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1565468356 + 5882276416 = 39566^2 + 76696^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71612879 + ... + 71612982.

It is an arithmetic number, because the mean of its divisors is an integer number (1169677873).

Almost surely, 2^7447744772 is an apocalyptic number.

It is an amenable number.

7447744772 is a deficient number, since it is larger than the sum of its proper divisors (6588389704).

7447744772 is a wasteful number, since it uses less digits than its factorization.

7447744772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143225878 (or 143225876 counting only the distinct ones).

The product of its digits is 8605184, while the sum is 53.

The square root of 7447744772 is about 86300.3173342949. The cubic root of 7447744772 is about 1952.8771703916.

The spelling of 7447744772 in words is "seven billion, four hundred forty-seven million, seven hundred forty-four thousand, seven hundred seventy-two".