9549978249 has 8 divisors (see below), whose sum is σ = 14552347840. Its totient is φ = 5457130416.

The previous prime is 9549978167. The next prime is 9549978253. The reversal of 9549978249 is 9428799459.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9549978249 - 2⁹ = 9549977737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9549978249.

It is not an unprimeable number, because it can be changed into a prime (9549978299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227380414 + ... + 227380455.

It is an arithmetic number, because the mean of its divisors is an integer number (1819043480).

Almost surely, 2^9549978249 is an apocalyptic number.

It is an amenable number.

9549978249 is a deficient number, since it is larger than the sum of its proper divisors (5002369591).

9549978249 is a wasteful number, since it uses less digits than its factorization.

9549978249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454760879.

The product of its digits is 58786560, while the sum is 66.

The square root of 9549978249 is about 97723.9901405996. The cubic root of 9549978249 is about 2121.6193164569.

The spelling of 9549978249 in words is "nine billion, five hundred forty-nine million, nine hundred seventy-eight thousand, two hundred forty-nine".