9809412540 has 48 divisors (see below), whose sum is σ = 27853217280. Its totient is φ = 2578999360.

The previous prime is 9809412533. The next prime is 9809412559. The reversal of 9809412540 is 452149089.

9809412540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×9809412540³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9809412492 and 9809412501.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1147080 + ... + 1155599.

It is an arithmetic number, because the mean of its divisors is an integer number (580275360).

Almost surely, 2^9809412540 is an apocalyptic number.

It is an amenable number.

9809412540 is an abundant number, since it is smaller than the sum of its proper divisors (18043804740).

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

9809412540 is a wasteful number, since it uses less digits than its factorization.

9809412540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2302762 (or 2302760 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 9809412540 is about 99042.4784625264. The cubic root of 9809412540 is about 2140.6598643484.

The spelling of 9809412540 in words is "nine billion, eight hundred nine million, four hundred twelve thousand, five hundred forty".