4439623993 has 4 divisors (see below), whose sum is σ = 5073856000. Its totient is φ = 3805391988.

The previous prime is 4439623957. The next prime is 4439624003. The reversal of 4439623993 is 3993269344.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4439623993 - 2¹⁷ = 4439492921 is a prime.

It is a super-2 number, since 2×4439623993² = 39420522398442528098, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4439623993.

It is not an unprimeable number, because it can be changed into a prime (4439623913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317115993 + ... + 317116006.

It is an arithmetic number, because the mean of its divisors is an integer number (1268464000).

Almost surely, 2^4439623993 is an apocalyptic number.

It is an amenable number.

4439623993 is a deficient number, since it is larger than the sum of its proper divisors (634232007).

4439623993 is an equidigital number, since it uses as much as digits as its factorization.

4439623993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634232006.

The product of its digits is 3779136, while the sum is 52.

The square root of 4439623993 is about 66630.5034725087. The cubic root of 4439623993 is about 1643.5467550793.

The spelling of 4439623993 in words is "four billion, four hundred thirty-nine million, six hundred twenty-three thousand, nine hundred ninety-three".