3921227 has 2 divisors, whose sum is σ = 3921228. Its totient is φ = 3921226.

The previous prime is 3921217. The next prime is 3921287. The reversal of 3921227 is 7221293.

It is a weak prime.

It is an emirp because it is prime and its reverse (7221293) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3921227 - 2¹² = 3917131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3921196 and 3921205.

It is not a weakly prime, because it can be changed into another prime (3921217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1960613 + 1960614.

It is an arithmetic number, because the mean of its divisors is an integer number (1960614).

Almost surely, 2^3921227 is an apocalyptic number.

3921227 is a deficient number, since it is larger than the sum of its proper divisors (1).

3921227 is an equidigital number, since it uses as much as digits as its factorization.

3921227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 26.

The square root of 3921227 is about 1980.2088273715. The cubic root of 3921227 is about 157.6911528096.

The spelling of 3921227 in words is "three million, nine hundred twenty-one thousand, two hundred twenty-seven".