4399963 has 8 divisors (see below), whose sum is σ = 4651520. Its totient is φ = 4150440.

The previous prime is 4399961. The next prime is 4399973. The reversal of 4399963 is 3699934.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 4399963 - 2¹ = 4399961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4399961) 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, 6658 + ... + 7288.

It is an arithmetic number, because the mean of its divisors is an integer number (581440).

Almost surely, 2^4399963 is an apocalyptic number.

4399963 is a deficient number, since it is larger than the sum of its proper divisors (251557).

4399963 is a wasteful number, since it uses less digits than its factorization.

4399963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017.

The product of its digits is 157464, while the sum is 43.

The square root of 4399963 is about 2097.6088767928. The cubic root of 4399963 is about 163.8637948024.

The spelling of 4399963 in words is "four million, three hundred ninety-nine thousand, nine hundred sixty-three".