2000555440 has 40 divisors (see below), whose sum is σ = 5009085648. Its totient is φ = 738666240.

The previous prime is 2000555419. The next prime is 2000555443. The reversal of 2000555440 is 445550002.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (2000555443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 960766 + ... + 962845.

Almost surely, 2^2000555440 is an apocalyptic number.

2000555440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2000555440 is an abundant number, since it is smaller than the sum of its proper divisors (3008530208).

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

2000555440 is a wasteful number, since it uses less digits than its factorization.

2000555440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1923637 (or 1923631 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 2000555440 is about 44727.5691268819. The cubic root of 2000555440 is about 1260.0376741906.

The spelling of 2000555440 in words is "two billion, five hundred fifty-five thousand, four hundred forty".