4445055440 has 160 divisors (see below), whose sum is σ = 12367779840. Its totient is φ = 1452667392.

The previous prime is 4445055389. The next prime is 4445055443. The reversal of 4445055440 is 445505444.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 4445055440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4445055443) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 6014591 + ... + 6015329.

It is an arithmetic number, because the mean of its divisors is an integer number (77298624).

Almost surely, 2^4445055440 is an apocalyptic number.

4445055440 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 4445055440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6183889920).

4445055440 is an abundant number, since it is smaller than the sum of its proper divisors (7922724400).

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

4445055440 is a wasteful number, since it uses less digits than its factorization.

4445055440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249 (or 1243 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 35.

The square root of 4445055440 is about 66671.2489758517. The cubic root of 4445055440 is about 1644.2167216655.

The spelling of 4445055440 in words is "four billion, four hundred forty-five million, fifty-five thousand, four hundred forty".