7447447222 has 4 divisors (see below), whose sum is σ = 11171170836. Its totient is φ = 3723723610.

The previous prime is 7447447199. The next prime is 7447447229. The reversal of 7447447222 is 2227447447.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7447447229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1861861804 + ... + 1861861807.

It is an arithmetic number, because the mean of its divisors is an integer number (2792792709).

Almost surely, 2^7447447222 is an apocalyptic number.

7447447222 is a deficient number, since it is larger than the sum of its proper divisors (3723723614).

7447447222 is a wasteful number, since it uses less digits than its factorization.

7447447222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3723723613.

The product of its digits is 702464, while the sum is 43.

The square root of 7447447222 is about 86298.5933952576. The cubic root of 7447447222 is about 1952.8511631300.

The spelling of 7447447222 in words is "seven billion, four hundred forty-seven million, four hundred forty-seven thousand, two hundred twenty-two".