4499021 has 2 divisors, whose sum is σ = 4499022. Its totient is φ = 4499020.

The previous prime is 4499009. The next prime is 4499059. The reversal of 4499021 is 1209944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3258025 + 1240996 = 1805^2 + 1114^2 .

It is a cyclic number.

It is not a de Polignac number, because 4499021 - 2¹⁴ = 4482637 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4499081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2249510 + 2249511.

It is an arithmetic number, because the mean of its divisors is an integer number (2249511).

Almost surely, 2^4499021 is an apocalyptic number.

It is an amenable number.

4499021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4499021 is an equidigital number, since it uses as much as digits as its factorization.

4499021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 4499021 is about 2121.0895784950. The cubic root of 4499021 is about 165.0843890328.

The spelling of 4499021 in words is "four million, four hundred ninety-nine thousand, twenty-one".