4400001280 has 36 divisors (see below), whose sum is σ = 10539381132. Its totient is φ = 1760000000.

The previous prime is 4400001259. The next prime is 4400001317. The reversal of 4400001280 is 821000044.

It can be written as a sum of positive squares in 2 ways, for example, as 736362496 + 3663638784 = 27136^2 + 60528^2 .

It is a super-2 number, since 2×4400001280² = 38720022528003276800, which contains 22 as substring.

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, 1717471 + ... + 1720030.

It is an arithmetic number, because the mean of its divisors is an integer number (292760587).

Almost surely, 2^4400001280 is an apocalyptic number.

4400001280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4400001280 is an abundant number, since it is smaller than the sum of its proper divisors (6139379852).

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

4400001280 is an equidigital number, since it uses as much as digits as its factorization.

4400001280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3437522 (or 3437508 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 4400001280 is about 66332.5054554703. The cubic root of 4400001280 is about 1638.6427000999.

The spelling of 4400001280 in words is "four billion, four hundred million, one thousand, two hundred eighty".