4441991444 has 24 divisors (see below), whose sum is σ = 8487258528. Its totient is φ = 2017398240.

The previous prime is 4441991443. The next prime is 4441991483.

4441991444 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 4441991395 and 4441991404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4441991443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11759 + ... + 94985.

It is an arithmetic number, because the mean of its divisors is an integer number (353635772).

Almost surely, 2^4441991444 is an apocalyptic number.

4441991444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4441991444 is a deficient number, since it is larger than the sum of its proper divisors (4045267084).

4441991444 is a wasteful number, since it uses less digits than its factorization.

4441991444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84455 (or 84453 counting only the distinct ones).

The product of its digits is 331776, while the sum is 44.

The square root of 4441991444 is about 66648.2666241216. The cubic root of 4441991444 is about 1643.8388462552.

The spelling of 4441991444 in words is "four billion, four hundred forty-one million, nine hundred ninety-one thousand, four hundred forty-four".