11761391 has 2 divisors, whose sum is σ = 11761392. Its totient is φ = 11761390.

The previous prime is 11761367. The next prime is 11761417. The reversal of 11761391 is 19316711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11761391 - 2¹⁴ = 11745007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11761291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5880695 + 5880696.

It is an arithmetic number, because the mean of its divisors is an integer number (5880696).

Almost surely, 2^11761391 is an apocalyptic number.

11761391 is a deficient number, since it is larger than the sum of its proper divisors (1).

11761391 is an equidigital number, since it uses as much as digits as its factorization.

11761391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134, while the sum is 29.

The square root of 11761391 is about 3429.4884458181. The cubic root of 11761391 is about 227.4152387213.

The spelling of 11761391 in words is "eleven million, seven hundred sixty-one thousand, three hundred ninety-one".