44402423440 has 80 divisors (see below), whose sum is σ = 107562401280. Its totient is φ = 17027297280.

The previous prime is 44402423419. The next prime is 44402423477. The reversal of 44402423440 is 4432420444.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×44402423440² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 181696 + ... + 349024.

It is an arithmetic number, because the mean of its divisors is an integer number (1344530016).

Almost surely, 2^44402423440 is an apocalyptic number.

44402423440 is a gapful number since it is divisible by the number (40) 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 44402423440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53781200640).

44402423440 is an abundant number, since it is smaller than the sum of its proper divisors (63159977840).

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

44402423440 is a wasteful number, since it uses less digits than its factorization.

44402423440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167480 (or 167474 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 31.

Adding to 44402423440 its reverse (4432420444), we get a palindrome (48834843884).

The spelling of 44402423440 in words is "forty-four billion, four hundred two million, four hundred twenty-three thousand, four hundred forty".