4228649 has 2 divisors, whose sum is σ = 4228650. Its totient is φ = 4228648.

The previous prime is 4228613. The next prime is 4228669. The reversal of 4228649 is 9468224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2890000 + 1338649 = 1700^2 + 1157^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4228649 is a prime.

It is a d-powerful number, because it can be written as 4⁴ + 2³ + 2¹⁵ + 8 + 6⁴ + 4¹¹ + 9 .

It is not a weakly prime, because it can be changed into another prime (4228669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2114324 + 2114325.

It is an arithmetic number, because the mean of its divisors is an integer number (2114325).

Almost surely, 2^4228649 is an apocalyptic number.

It is an amenable number.

4228649 is a deficient number, since it is larger than the sum of its proper divisors (1).

4228649 is an equidigital number, since it uses as much as digits as its factorization.

4228649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 35.

The square root of 4228649 is about 2056.3679145523. The cubic root of 4228649 is about 161.7088837680.

The spelling of 4228649 in words is "four million, two hundred twenty-eight thousand, six hundred forty-nine".