11439811 has 2 divisors, whose sum is σ = 11439812. Its totient is φ = 11439810.

The previous prime is 11439761. The next prime is 11439817. The reversal of 11439811 is 11893411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11439811 - 2⁹ = 11439299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11439811.

It is not a weakly prime, because it can be changed into another prime (11439817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5719905 + 5719906.

It is an arithmetic number, because the mean of its divisors is an integer number (5719906).

Almost surely, 2^11439811 is an apocalyptic number.

11439811 is a deficient number, since it is larger than the sum of its proper divisors (1).

11439811 is an equidigital number, since it uses as much as digits as its factorization.

11439811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 28.

The square root of 11439811 is about 3382.2789654314. The cubic root of 11439811 is about 225.3233933989.

The spelling of 11439811 in words is "eleven million, four hundred thirty-nine thousand, eight hundred eleven".