4221428049 has 16 divisors (see below), whose sum is σ = 6621848640. Its totient is φ = 2648738880.

The previous prime is 4221428047. The next prime is 4221428051. The reversal of 4221428049 is 9408241224.

4221428049 is a `hidden beast` number, since 4 + 221 + 428 + 0 + 4 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (4221428047) and next prime (4221428051).

It is not a de Polignac number, because 4221428049 - 2¹ = 4221428047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4221428041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4598047 + ... + 4598964.

It is an arithmetic number, because the mean of its divisors is an integer number (413865540).

Almost surely, 2^4221428049 is an apocalyptic number.

It is an amenable number.

4221428049 is a deficient number, since it is larger than the sum of its proper divisors (2400420591).

4221428049 is a wasteful number, since it uses less digits than its factorization.

4221428049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9197037 (or 9197031 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 4221428049 is about 64972.5176440008. The cubic root of 4221428049 is about 1616.1678522640.

The spelling of 4221428049 in words is "four billion, two hundred twenty-one million, four hundred twenty-eight thousand, forty-nine".