4431399 has 16 divisors (see below), whose sum is σ = 6831360. Its totient is φ = 2502720.

The previous prime is 4431367. The next prime is 4431443. The reversal of 4431399 is 9931344.

4431399 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4431399 - 2⁵ = 4431367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4431499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 684 + ... + 3054.

It is an arithmetic number, because the mean of its divisors is an integer number (426960).

Almost surely, 2^4431399 is an apocalyptic number.

4431399 is a deficient number, since it is larger than the sum of its proper divisors (2399961).

4431399 is a wasteful number, since it uses less digits than its factorization.

4431399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2470.

The product of its digits is 11664, while the sum is 33.

The square root of 4431399 is about 2105.0888342300. The cubic root of 4431399 is about 164.2531164777.

Subtracting 4431399 from its reverse (9931344), we obtain a palindrome (5499945).

The spelling of 4431399 in words is "four million, four hundred thirty-one thousand, three hundred ninety-nine".