4399993 has 4 divisors (see below), whose sum is σ = 4738468. Its totient is φ = 4061520.

The previous prime is 4399987. The next prime is 4400021. The reversal of 4399993 is 3999934.

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 2832489 + 1567504 = 1683^2 + 1252^2 .

It is a cyclic number.

It is not a de Polignac number, because 4399993 - 2⁵ = 4399961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4399903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169218 + ... + 169243.

It is an arithmetic number, because the mean of its divisors is an integer number (1184617).

Almost surely, 2^4399993 is an apocalyptic number.

It is an amenable number.

4399993 is a deficient number, since it is larger than the sum of its proper divisors (338475).

4399993 is a wasteful number, since it uses less digits than its factorization.

4399993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338474.

The product of its digits is 236196, while the sum is 46.

The square root of 4399993 is about 2097.6160277801. The cubic root of 4399993 is about 163.8641672224.

The spelling of 4399993 in words is "four million, three hundred ninety-nine thousand, nine hundred ninety-three".