4402023440 has 20 divisors (see below), whose sum is σ = 10234704684. Its totient is φ = 1760809344.

The previous prime is 4402023427. The next prime is 4402023449. The reversal of 4402023440 is 443202044.

It can be written as a sum of positive squares in 2 ways, for example, as 640899856 + 3761123584 = 25316^2 + 61328^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (4402023449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27512567 + ... + 27512726.

Almost surely, 2^4402023440 is an apocalyptic number.

4402023440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4402023440 is an abundant number, since it is smaller than the sum of its proper divisors (5832681244).

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

4402023440 is a wasteful number, since it uses less digits than its factorization.

4402023440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55025306 (or 55025300 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 4402023440 is about 66347.7463068641. The cubic root of 4402023440 is about 1638.8936917110.

Adding to 4402023440 its reverse (443202044), we get a palindrome (4845225484).

The spelling of 4402023440 in words is "four billion, four hundred two million, twenty-three thousand, four hundred forty".