4399423 has 8 divisors (see below), whose sum is σ = 5150880. Its totient is φ = 3678720.

The previous prime is 4399399. The next prime is 4399457. The reversal of 4399423 is 3249934.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4399423 is a prime.

It is an Ulam number.

4399423 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4399123) 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 7 ways as a sum of consecutive naturals, for example, 7378 + ... + 7951.

It is an arithmetic number, because the mean of its divisors is an integer number (643860).

Almost surely, 2^4399423 is an apocalyptic number.

4399423 is a deficient number, since it is larger than the sum of its proper divisors (751457).

4399423 is a wasteful number, since it uses less digits than its factorization.

4399423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15377.

The product of its digits is 23328, while the sum is 34.

The square root of 4399423 is about 2097.4801548525. The cubic root of 4399423 is about 163.8570909529.

The spelling of 4399423 in words is "four million, three hundred ninety-nine thousand, four hundred twenty-three".