4400453440 has 28 divisors (see below), whose sum is σ = 10478580516. Its totient is φ = 1760181248.

The previous prime is 4400453429. The next prime is 4400453509. The reversal of 4400453440 is 443540044.

It can be written as a sum of positive squares in 2 ways, for example, as 1390394944 + 3010058496 = 37288^2 + 54864^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4400453399 and 4400453408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6875389 + ... + 6876028.

Almost surely, 2^4400453440 is an apocalyptic number.

4400453440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4400453440 is an abundant number, since it is smaller than the sum of its proper divisors (6078127076).

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

4400453440 is a wasteful number, since it uses less digits than its factorization.

4400453440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13751434 (or 13751424 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 4400453440 is about 66335.9136516563. The cubic root of 4400453440 is about 1638.6988291218.

Adding to 4400453440 its reverse (443540044), we get a palindrome (4843993484).

The spelling of 4400453440 in words is "four billion, four hundred million, four hundred fifty-three thousand, four hundred forty".