4443663444 has 96 divisors (see below), whose sum is σ = 11649318912. Its totient is φ = 1306512000.

The previous prime is 4443663443. The next prime is 4443663493.

4443663444 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×4443663444² = 39492289607083882272, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 4443663396 and 4443663405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4443663443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2103949 + ... + 2106059.

It is an arithmetic number, because the mean of its divisors is an integer number (121347072).

Almost surely, 2^4443663444 is an apocalyptic number.

4443663444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4443663444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5824659456).

4443663444 is an abundant number, since it is smaller than the sum of its proper divisors (7205655468).

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

4443663444 is a wasteful number, since it uses less digits than its factorization.

4443663444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2597 (or 2595 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 42.

The square root of 4443663444 is about 66660.8089059831. The cubic root of 4443663444 is about 1644.0450716090.

It can be divided in two parts, 44436 and 63444, that added together give a triangular number (107880 = T₄₆₄).

The spelling of 4443663444 in words is "four billion, four hundred forty-three million, six hundred sixty-three thousand, four hundred forty-four".