11239161 has 4 divisors (see below), whose sum is σ = 14985552. Its totient is φ = 7492772.

The previous prime is 11239139. The next prime is 11239171. The reversal of 11239161 is 16193211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16193211 = 3 ⋅5397737.

It is a cyclic number.

It is not a de Polignac number, because 11239161 - 2²² = 7044857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11239121) 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 in 3 ways as a sum of consecutive naturals, for example, 1873191 + ... + 1873196.

It is an arithmetic number, because the mean of its divisors is an integer number (3746388).

Almost surely, 2^11239161 is an apocalyptic number.

It is an amenable number.

11239161 is a deficient number, since it is larger than the sum of its proper divisors (3746391).

11239161 is an equidigital number, since it uses as much as digits as its factorization.

11239161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3746390.

The product of its digits is 324, while the sum is 24.

The square root of 11239161 is about 3352.4857941533. The cubic root of 11239161 is about 223.9982528031.

The spelling of 11239161 in words is "eleven million, two hundred thirty-nine thousand, one hundred sixty-one".