7847023221 has 12 divisors (see below), whose sum is σ = 11402463072. Its totient is φ = 5200022376.

The previous prime is 7847023213. The next prime is 7847023231. The reversal of 7847023221 is 1223207487.

It is not a de Polignac number, because 7847023221 - 2³ = 7847023213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7847023231) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2608951 + ... + 2611956.

It is an arithmetic number, because the mean of its divisors is an integer number (950205256).

Almost surely, 2^7847023221 is an apocalyptic number.

It is an amenable number.

7847023221 is a deficient number, since it is larger than the sum of its proper divisors (3555439851).

7847023221 is a wasteful number, since it uses less digits than its factorization.

7847023221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5221080 (or 5221077 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 7847023221 is about 88583.4252047187. The cubic root of 7847023221 is about 1987.1698041226.

The spelling of 7847023221 in words is "seven billion, eight hundred forty-seven million, twenty-three thousand, two hundred twenty-one".