11439161 has 4 divisors (see below), whose sum is σ = 11705232. Its totient is φ = 11173092.

The previous prime is 11439157. The next prime is 11439163. The reversal of 11439161 is 16193411.

11439161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 11439161 - 2² = 11439157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11439161.

It is not an unprimeable number, because it can be changed into a prime (11439163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132971 + ... + 133056.

It is an arithmetic number, because the mean of its divisors is an integer number (2926308).

Almost surely, 2^11439161 is an apocalyptic number.

It is an amenable number.

11439161 is a deficient number, since it is larger than the sum of its proper divisors (266071).

11439161 is an equidigital number, since it uses as much as digits as its factorization.

11439161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266070.

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

The square root of 11439161 is about 3382.1828750084. The cubic root of 11439161 is about 225.3191257591.

The spelling of 11439161 in words is "eleven million, four hundred thirty-nine thousand, one hundred sixty-one".