4393055440 has 80 divisors (see below), whose sum is σ = 10478793600. Its totient is φ = 1711858176.

The previous prime is 4393055437. The next prime is 4393055441. The reversal of 4393055440 is 445503934.

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

It is a self number, because there is not a number n which added to its sum of digits gives 4393055440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4393055441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1508706 + ... + 1511614.

It is an arithmetic number, because the mean of its divisors is an integer number (130984920).

Almost surely, 2^4393055440 is an apocalyptic number.

4393055440 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 4393055440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5239396800).

4393055440 is an abundant number, since it is smaller than the sum of its proper divisors (6085738160).

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

4393055440 is a wasteful number, since it uses less digits than its factorization.

4393055440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3404 (or 3398 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 4393055440 is about 66280.1285454396. The cubic root of 4393055440 is about 1637.7799924460.

The spelling of 4393055440 in words is "four billion, three hundred ninety-three million, fifty-five thousand, four hundred forty".