4444042440 has 64 divisors (see below), whose sum is σ = 13492785600. Its totient is φ = 1170797312.

The previous prime is 4444042423. The next prime is 4444042453. The reversal of 4444042440 is 442404444.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 4444042398 and 4444042407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213135 + ... + 233054.

It is an arithmetic number, because the mean of its divisors is an integer number (210824775).

Almost surely, 2^4444042440 is an apocalyptic number.

4444042440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4444042440 is an abundant number, since it is smaller than the sum of its proper divisors (9048743160).

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

4444042440 is a wasteful number, since it uses less digits than its factorization.

4444042440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446286 (or 446282 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 30.

The square root of 4444042440 is about 66663.6515651521. The cubic root of 4444042440 is about 1644.0918099816.

Adding to 4444042440 its reverse (442404444), we get a palindrome (4886446884).

The spelling of 4444042440 in words is "four billion, four hundred forty-four million, forty-two thousand, four hundred forty".