4438993 has 4 divisors (see below), whose sum is σ = 4780468. Its totient is φ = 4097520.

The previous prime is 4438981. The next prime is 4438997. The reversal of 4438993 is 3998344.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 859329 + 3579664 = 927^2 + 1892^2 .

It is a cyclic number.

It is not a de Polignac number, because 4438993 - 2⁵ = 4438961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4438997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170718 + ... + 170743.

It is an arithmetic number, because the mean of its divisors is an integer number (1195117).

Almost surely, 2^4438993 is an apocalyptic number.

It is an amenable number.

4438993 is a deficient number, since it is larger than the sum of its proper divisors (341475).

4438993 is a wasteful number, since it uses less digits than its factorization.

4438993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341474.

The product of its digits is 93312, while the sum is 40.

The square root of 4438993 is about 2106.8917864950. The cubic root of 4438993 is about 164.3468886951.

The spelling of 4438993 in words is "four million, four hundred thirty-eight thousand, nine hundred ninety-three".