4906021 has 2 divisors, whose sum is σ = 4906022. Its totient is φ = 4906020.

The previous prime is 4906007. The next prime is 4906039. The reversal of 4906021 is 1206094.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4901796 + 4225 = 2214^2 + 65^2 .

It is a cyclic number.

It is not a de Polignac number, because 4906021 - 2¹⁷ = 4774949 is a prime.

It is a Chen prime.

4906021 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4905983 and 4906001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4906621) 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, 2453010 + 2453011.

It is an arithmetic number, because the mean of its divisors is an integer number (2453011).

Almost surely, 2^4906021 is an apocalyptic number.

It is an amenable number.

4906021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4906021 is an equidigital number, since it uses as much as digits as its factorization.

4906021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 4906021 is about 2214.9539498599. The cubic root of 4906021 is about 169.9194658915.

The spelling of 4906021 in words is "four million, nine hundred six thousand, twenty-one".