4489813 has 2 divisors, whose sum is σ = 4489814. Its totient is φ = 4489812.

The previous prime is 4489799. The next prime is 4489843. The reversal of 4489813 is 3189844.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4401604 + 88209 = 2098^2 + 297^2 .

It is a cyclic number.

It is not a de Polignac number, because 4489813 - 2¹³ = 4481621 is a prime.

It is a d-powerful number, because it can be written as 4⁹ + 4¹¹ + 8³ + 9² + 8⁵ + 1 + 3 .

4489813 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4489843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2244906 + 2244907.

It is an arithmetic number, because the mean of its divisors is an integer number (2244907).

Almost surely, 2^4489813 is an apocalyptic number.

It is an amenable number.

4489813 is a deficient number, since it is larger than the sum of its proper divisors (1).

4489813 is an equidigital number, since it uses as much as digits as its factorization.

4489813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 37.

The square root of 4489813 is about 2118.9178842041. The cubic root of 4489813 is about 164.9716878266.

The spelling of 4489813 in words is "four million, four hundred eighty-nine thousand, eight hundred thirteen".