3727227221 has 8 divisors (see below), whose sum is σ = 3820411224. Its totient is φ = 3634151680.

The previous prime is 3727227199. The next prime is 3727227223. The reversal of 3727227221 is 1227227273.

It can be written as a sum of positive squares in 4 ways, for example, as 728460100 + 2998767121 = 26990^2 + 54761^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3727227221 - 2⁶ = 3727227157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3727227223) 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, 44825 + ... + 97281.

It is an arithmetic number, because the mean of its divisors is an integer number (477551403).

Almost surely, 2^3727227221 is an apocalyptic number.

It is an amenable number.

3727227221 is a deficient number, since it is larger than the sum of its proper divisors (93184003).

3727227221 is a wasteful number, since it uses less digits than its factorization.

3727227221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54231.

The product of its digits is 32928, while the sum is 35.

The square root of 3727227221 is about 61051.0214574662. The cubic root of 3727227221 is about 1550.4649622777.

The spelling of 3727227221 in words is "three billion, seven hundred twenty-seven million, two hundred twenty-seven thousand, two hundred twenty-one".