4399873 has 2 divisors, whose sum is σ = 4399874. Its totient is φ = 4399872.

The previous prime is 4399853. The next prime is 4399883. The reversal of 4399873 is 3789934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4376464 + 23409 = 2092^2 + 153^2 .

It is a cyclic number.

It is not a de Polignac number, because 4399873 - 2⁹ = 4399361 is a prime.

It is a super-2 number, since 2×4399873² = 38717764832258, which contains 22 as substring.

It is a d-powerful number, because it can be written as 4² + 3⁵ + 9⁵ + 9⁶ + 8⁷ + 7⁶ + 3¹³ .

It is not a weakly prime, because it can be changed into another prime (4399853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2199936 + 2199937.

It is an arithmetic number, because the mean of its divisors is an integer number (2199937).

Almost surely, 2^4399873 is an apocalyptic number.

It is an amenable number.

4399873 is a deficient number, since it is larger than the sum of its proper divisors (1).

4399873 is an equidigital number, since it uses as much as digits as its factorization.

4399873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 43.

The square root of 4399873 is about 2097.5874236846. The cubic root of 4399873 is about 163.8626775322.

The spelling of 4399873 in words is "four million, three hundred ninety-nine thousand, eight hundred seventy-three".