4399956 has 72 divisors (see below), whose sum is σ = 12475008. Its totient is φ = 1296000.

The previous prime is 4399943. The next prime is 4399961. The reversal of 4399956 is 6599934.

It is a happy number.

It is a super-3 number, since 3×4399956³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16101 + ... + 16371.

It is an arithmetic number, because the mean of its divisors is an integer number (173264).

Almost surely, 2^4399956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4399956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6237504).

4399956 is an abundant number, since it is smaller than the sum of its proper divisors (8075052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4399956 is a wasteful number, since it uses less digits than its factorization.

4399956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333 (or 328 counting only the distinct ones).

The product of its digits is 262440, while the sum is 45.

The square root of 4399956 is about 2097.6072082256. The cubic root of 4399956 is about 163.8637079041.

It can be divided in two parts, 43 and 99956, that added together give a palindrome (99999).

The spelling of 4399956 in words is "four million, three hundred ninety-nine thousand, nine hundred fifty-six".