5644440400 has 120 divisors (see below), whose sum is σ = 13788028224. Its totient is φ = 2220288000.

The previous prime is 5644440397. The next prime is 5644440401. The reversal of 5644440400 is 40444465.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5644440401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6824787 + ... + 6825613.

Almost surely, 2^5644440400 is an apocalyptic number.

5644440400 is a gapful number since it is divisible by the number (50) 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 5644440400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6894014112).

5644440400 is an abundant number, since it is smaller than the sum of its proper divisors (8143587824).

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

5644440400 is a wasteful number, since it uses less digits than its factorization.

5644440400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109 (or 1098 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 31.

The square root of 5644440400 is about 75129.4908807454. The cubic root of 5644440400 is about 1780.4931091848.

Adding to 5644440400 its reverse (40444465), we get a palindrome (5684884865).

The spelling of 5644440400 in words is "five billion, six hundred forty-four million, four hundred forty thousand, four hundred".