9912744440 has 16 divisors (see below), whose sum is σ = 22303675080. Its totient is φ = 3965097760.

The previous prime is 9912744367. The next prime is 9912744469. The reversal of 9912744440 is 444472199.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 9912744391 and 9912744400.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 123909266 + ... + 123909345.

Almost surely, 2^9912744440 is an apocalyptic number.

It is an amenable number.

9912744440 is an abundant number, since it is smaller than the sum of its proper divisors (12390930640).

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

9912744440 is a wasteful number, since it uses less digits than its factorization.

9912744440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247818622 (or 247818618 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 9912744440 is about 99562.7663336049. The cubic root of 9912744440 is about 2148.1501622554.

The spelling of 9912744440 in words is "nine billion, nine hundred twelve million, seven hundred forty-four thousand, four hundred forty".