11147791 has 2 divisors, whose sum is σ = 11147792. Its totient is φ = 11147790.

The previous prime is 11147783. The next prime is 11147797. The reversal of 11147791 is 19774111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11147791 - 2³ = 11147783 is a prime.

It is equal to p₇₃₅₆₁₉ and since 11147791 and 735619 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11147797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5573895 + 5573896.

It is an arithmetic number, because the mean of its divisors is an integer number (5573896).

Almost surely, 2^11147791 is an apocalyptic number.

11147791 is a deficient number, since it is larger than the sum of its proper divisors (1).

11147791 is an equidigital number, since it uses as much as digits as its factorization.

11147791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1764, while the sum is 31.

The square root of 11147791 is about 3338.8307833731. The cubic root of 11147791 is about 223.3895942514.

The spelling of 11147791 in words is "eleven million, one hundred forty-seven thousand, seven hundred ninety-one".