9491221949 has 8 divisors (see below), whose sum is σ = 10361926080. Its totient is φ = 8621828800.

The previous prime is 9491221933. The next prime is 9491221967.

9491221949 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 9491221949 - 2⁴ = 9491221933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9491221897 and 9491221906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9491221969) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 312572 + ... + 341589.

It is an arithmetic number, because the mean of its divisors is an integer number (1295240760).

Almost surely, 2^9491221949 is an apocalyptic number.

It is an amenable number.

9491221949 is a deficient number, since it is larger than the sum of its proper divisors (870704131).

9491221949 is a wasteful number, since it uses less digits than its factorization.

9491221949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655491.

The product of its digits is 419904, while the sum is 50.

The square root of 9491221949 is about 97422.9025896888. The cubic root of 9491221949 is about 2117.2592704864.

The spelling of 9491221949 in words is "nine billion, four hundred ninety-one million, two hundred twenty-one thousand, nine hundred forty-nine".