4469821 has 2 divisors, whose sum is σ = 4469822. Its totient is φ = 4469820.

The previous prime is 4469813. The next prime is 4469831. The reversal of 4469821 is 1289644.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3944196 + 525625 = 1986^2 + 725^2 .

It is a cyclic number.

It is not a de Polignac number, because 4469821 - 2³ = 4469813 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4469831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2234910 + 2234911.

It is an arithmetic number, because the mean of its divisors is an integer number (2234911).

Almost surely, 2^4469821 is an apocalyptic number.

It is an amenable number.

4469821 is a deficient number, since it is larger than the sum of its proper divisors (1).

4469821 is an equidigital number, since it uses as much as digits as its factorization.

4469821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 34.

The square root of 4469821 is about 2114.1951187154. The cubic root of 4469821 is about 164.7264644472.

The spelling of 4469821 in words is "four million, four hundred sixty-nine thousand, eight hundred twenty-one".