9491279411 has 2 divisors, whose sum is σ = 9491279412. Its totient is φ = 9491279410.

The previous prime is 9491279359. The next prime is 9491279419. The reversal of 9491279411 is 1149721949.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1149721949) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9491279411 - 2³⁰ = 8417537587 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (9491279419) 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 as a sum of consecutive naturals, namely, 4745639705 + 4745639706.

It is an arithmetic number, because the mean of its divisors is an integer number (4745639706).

Almost surely, 2^9491279411 is an apocalyptic number.

9491279411 is a deficient number, since it is larger than the sum of its proper divisors (1).

9491279411 is an equidigital number, since it uses as much as digits as its factorization.

9491279411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 47.

The square root of 9491279411 is about 97423.1974993636. The cubic root of 9491279411 is about 2117.2635432663.

The spelling of 9491279411 in words is "nine billion, four hundred ninety-one million, two hundred seventy-nine thousand, four hundred eleven".