4013544444 has 96 divisors (see below), whose sum is σ = 11591032320. Its totient is φ = 1052552448.

The previous prime is 4013544421. The next prime is 4013544473. The reversal of 4013544444 is 4444453104.

It is a super-2 number, since 2×4013544444² = 32217078007926538272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 185202 + ... + 205734.

It is an arithmetic number, because the mean of its divisors is an integer number (120739920).

Almost surely, 2^4013544444 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 4013544444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5795516160).

4013544444 is an abundant number, since it is smaller than the sum of its proper divisors (7577487876).

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

4013544444 is a wasteful number, since it uses less digits than its factorization.

4013544444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20739 (or 20737 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 33.

The square root of 4013544444 is about 63352.5409435170. The cubic root of 4013544444 is about 1589.1907388473.

Adding to 4013544444 its reverse (4444453104), we get a palindrome (8457997548).

The spelling of 4013544444 in words is "four billion, thirteen million, five hundred forty-four thousand, four hundred forty-four".