2100000440 has 32 divisors (see below), whose sum is σ = 4729430160. Its totient is φ = 839212800.

The previous prime is 2100000407. The next prime is 2100000449. The reversal of 2100000440 is 440000012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100000449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19580 + ... + 67700.

Almost surely, 2^2100000440 is an apocalyptic number.

2100000440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100000440 is an abundant number, since it is smaller than the sum of its proper divisors (2629429720).

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

2100000440 is a wasteful number, since it uses less digits than its factorization.

2100000440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49223 (or 49219 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 2100000440 is about 45825.7617503517. The cubic root of 2100000440 is about 1280.5792544248.

Adding to 2100000440 its reverse (440000012), we get a palindrome (2540000452).

The spelling of 2100000440 in words is "two billion, one hundred million, four hundred forty", and thus it is an aban number.