9891296049 has 4 divisors (see below), whose sum is σ = 13188394736. Its totient is φ = 6594197364.

The previous prime is 9891295991. The next prime is 9891296053. The reversal of 9891296049 is 9406921989.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 9891296049 - 2²⁰ = 9890247473 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 9891296049.

It is not an unprimeable number, because it can be changed into a prime (9891296069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1648549339 + ... + 1648549344.

It is an arithmetic number, because the mean of its divisors is an integer number (3297098684).

Almost surely, 2^9891296049 is an apocalyptic number.

It is an amenable number.

9891296049 is a deficient number, since it is larger than the sum of its proper divisors (3297098687).

9891296049 is a wasteful number, since it uses less digits than its factorization.

9891296049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3297098686.

The product of its (nonzero) digits is 2519424, while the sum is 57.

The square root of 9891296049 is about 99454.9950932581. The cubic root of 9891296049 is about 2146.5997125441.

The spelling of 9891296049 in words is "nine billion, eight hundred ninety-one million, two hundred ninety-six thousand, forty-nine".