7444444420 has 96 divisors (see below), whose sum is σ = 18625178880. Its totient is φ = 2445381120.

The previous prime is 7444444409. The next prime is 7444444421. The reversal of 7444444420 is 244444447.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 7444444420.

It is not an unprimeable number, because it can be changed into a prime (7444444421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 524862 + ... + 538858.

It is an arithmetic number, because the mean of its divisors is an integer number (194012280).

Almost surely, 2^7444444420 is an apocalyptic number.

7444444420 is a gapful number since it is divisible by the number (70) 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 7444444420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9312589440).

7444444420 is an abundant number, since it is smaller than the sum of its proper divisors (11180734460).

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

7444444420 is a wasteful number, since it uses less digits than its factorization.

7444444420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14173 (or 14171 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 37.

The square root of 7444444420 is about 86281.1938953095. The cubic root of 7444444420 is about 1952.5886654131.

Adding to 7444444420 its reverse (244444447), we get a palindrome (7688888867).

The spelling of 7444444420 in words is "seven billion, four hundred forty-four million, four hundred forty-four thousand, four hundred twenty".