11161439 has 2 divisors, whose sum is σ = 11161440. Its totient is φ = 11161438.

The previous prime is 11161427. The next prime is 11161453. The reversal of 11161439 is 93416111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11161439 - 2²⁰ = 10112863 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11161459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5580719 + 5580720.

It is an arithmetic number, because the mean of its divisors is an integer number (5580720).

Almost surely, 2^11161439 is an apocalyptic number.

11161439 is a deficient number, since it is larger than the sum of its proper divisors (1).

11161439 is an equidigital number, since it uses as much as digits as its factorization.

11161439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 26.

The square root of 11161439 is about 3340.8739874470. The cubic root of 11161439 is about 223.4807207603.

The spelling of 11161439 in words is "eleven million, one hundred sixty-one thousand, four hundred thirty-nine".