4747872221 has 8 divisors (see below), whose sum is σ = 4955109120. Its totient is φ = 4540702672.

The previous prime is 4747872197. The next prime is 4747872223. The reversal of 4747872221 is 1222787474.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4747872221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4747872223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172796 + ... + 198378.

It is an arithmetic number, because the mean of its divisors is an integer number (619388640).

Almost surely, 2^4747872221 is an apocalyptic number.

It is an amenable number.

4747872221 is a deficient number, since it is larger than the sum of its proper divisors (207236899).

4747872221 is a wasteful number, since it uses less digits than its factorization.

4747872221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33675.

The product of its digits is 351232, while the sum is 44.

The square root of 4747872221 is about 68904.8055000520. The cubic root of 4747872221 is about 1680.7366644842.

The spelling of 4747872221 in words is "four billion, seven hundred forty-seven million, eight hundred seventy-two thousand, two hundred twenty-one".