4949221 has 2 divisors, whose sum is σ = 4949222. Its totient is φ = 4949220.

The previous prime is 4949213. The next prime is 4949239. The reversal of 4949221 is 1229494.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4056196 + 893025 = 2014^2 + 945^2 .

It is a cyclic number.

It is not a de Polignac number, because 4949221 - 2³ = 4949213 is a prime.

4949221 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4949521) 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, 2474610 + 2474611.

It is an arithmetic number, because the mean of its divisors is an integer number (2474611).

Almost surely, 2^4949221 is an apocalyptic number.

It is an amenable number.

4949221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4949221 is an equidigital number, since it uses as much as digits as its factorization.

4949221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 31.

The square root of 4949221 is about 2224.6844720095. The cubic root of 4949221 is about 170.4167514408.

The spelling of 4949221 in words is "four million, nine hundred forty-nine thousand, two hundred twenty-one".