4402020440 has 32 divisors (see below), whose sum is σ = 9906490080. Its totient is φ = 1760462592.

The previous prime is 4402020373. The next prime is 4402020449. The reversal of 4402020440 is 440202044.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4402020449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322637 + ... + 336003.

It is an arithmetic number, because the mean of its divisors is an integer number (309577815).

Almost surely, 2^4402020440 is an apocalyptic number.

4402020440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4402020440 is an abundant number, since it is smaller than the sum of its proper divisors (5504469640).

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

4402020440 is a wasteful number, since it uses less digits than its factorization.

4402020440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21611 (or 21607 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 4402020440 is about 66347.7236987073. The cubic root of 4402020440 is about 1638.8933194062.

4402020440 divided by its sum of digits (20) gives a palindrome (220101022).

Adding to 4402020440 its reverse (440202044), we get a palindrome (4842222484).

The spelling of 4402020440 in words is "four billion, four hundred two million, twenty thousand, four hundred forty".