4244020440 has 128 divisors (see below), whose sum is σ = 13950144000. Its totient is φ = 1024363520.

The previous prime is 4244020393. The next prime is 4244020441. The reversal of 4244020440 is 440204424.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 4244020440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4244020441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 300661 + ... + 314459.

It is an arithmetic number, because the mean of its divisors is an integer number (108985500).

Almost surely, 2^4244020440 is an apocalyptic number.

4244020440 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 4244020440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6975072000).

4244020440 is an abundant number, since it is smaller than the sum of its proper divisors (9706123560).

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

4244020440 is a wasteful number, since it uses less digits than its factorization.

4244020440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14057 (or 14053 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 4244020440 is about 65146.1467778410. The cubic root of 4244020440 is about 1619.0458792594.

Adding to 4244020440 its reverse (440204424), we get a palindrome (4684224864).

The spelling of 4244020440 in words is "four billion, two hundred forty-four million, twenty thousand, four hundred forty".