4000448445 has 32 divisors (see below), whose sum is σ = 7464403200. Its totient is φ = 1828774080.

The previous prime is 4000448437. The next prime is 4000448477. The reversal of 4000448445 is 5448440004.

It is not a de Polignac number, because 4000448445 - 2³ = 4000448437 is a prime.

It is a super-2 number, since 2×4000448445² = 32007175522205836050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 383626 + ... + 393915.

It is an arithmetic number, because the mean of its divisors is an integer number (233262600).

Almost surely, 2^4000448445 is an apocalyptic number.

It is an amenable number.

4000448445 is a deficient number, since it is larger than the sum of its proper divisors (3463954755).

4000448445 is an equidigital number, since it uses as much as digits as its factorization.

4000448445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777570 (or 777556 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 33.

The square root of 4000448445 is about 63249.0983730203. The cubic root of 4000448445 is about 1587.4603715902.

Adding to 4000448445 its reverse (5448440004), we get a palindrome (9448888449).

The spelling of 4000448445 in words is "four billion, four hundred forty-eight thousand, four hundred forty-five".