4376221 has 2 divisors, whose sum is σ = 4376222. Its totient is φ = 4376220.

The previous prime is 4376189. The next prime is 4376231. The reversal of 4376221 is 1226734.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3404025 + 972196 = 1845^2 + 986^2 .

It is a cyclic number.

It is not a de Polignac number, because 4376221 - 2⁵ = 4376189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4376231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2188110 + 2188111.

It is an arithmetic number, because the mean of its divisors is an integer number (2188111).

Almost surely, 2^4376221 is an apocalyptic number.

It is an amenable number.

4376221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4376221 is an equidigital number, since it uses as much as digits as its factorization.

4376221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 25.

The square root of 4376221 is about 2091.9419207999. The cubic root of 4376221 is about 163.5685292255.

The spelling of 4376221 in words is "four million, three hundred seventy-six thousand, two hundred twenty-one".