9949864580 has 12 divisors (see below), whose sum is σ = 20894715660. Its totient is φ = 3979945824.

The previous prime is 9949864541. The next prime is 9949864597. The reversal of 9949864580 is 854689499.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5613905476 + 4335959104 = 74926^2 + 65848^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248746595 + ... + 248746634.

It is an arithmetic number, because the mean of its divisors is an integer number (1741226305).

Almost surely, 2^9949864580 is an apocalyptic number.

It is an amenable number.

9949864580 is an abundant number, since it is smaller than the sum of its proper divisors (10944851080).

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

9949864580 is a wasteful number, since it uses less digits than its factorization.

9949864580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497493238 (or 497493236 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 62.

The square root of 9949864580 is about 99749.0079148660. The cubic root of 9949864580 is about 2150.8282066132.

The spelling of 9949864580 in words is "nine billion, nine hundred forty-nine million, eight hundred sixty-four thousand, five hundred eighty".