4284656021 has 2 divisors, whose sum is σ = 4284656022. Its totient is φ = 4284656020.

The previous prime is 4284656003. The next prime is 4284656027. The reversal of 4284656021 is 1206564824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4239832996 + 44823025 = 65114^2 + 6695^2 .

It is a cyclic number.

It is not a de Polignac number, because 4284656021 - 2¹⁸ = 4284393877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4284656027) 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 as a sum of consecutive naturals, namely, 2142328010 + 2142328011.

It is an arithmetic number, because the mean of its divisors is an integer number (2142328011).

Almost surely, 2^4284656021 is an apocalyptic number.

It is an amenable number.

4284656021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4284656021 is an equidigital number, since it uses as much as digits as its factorization.

4284656021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 4284656021 is about 65457.2839415141. The cubic root of 4284656021 is about 1624.1968128263.

The spelling of 4284656021 in words is "four billion, two hundred eighty-four million, six hundred fifty-six thousand, twenty-one".