11947161 has 8 divisors (see below), whose sum is σ = 15975360. Its totient is φ = 7941872.

The previous prime is 11947153. The next prime is 11947193. The reversal of 11947161 is 16174911.

11947161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11947161 - 2³ = 11947153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11947361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4470 + ... + 6623.

It is an arithmetic number, because the mean of its divisors is an integer number (1996920).

Almost surely, 2^11947161 is an apocalyptic number.

It is an amenable number.

11947161 is a deficient number, since it is larger than the sum of its proper divisors (4028199).

11947161 is a wasteful number, since it uses less digits than its factorization.

11947161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11455.

The product of its digits is 1512, while the sum is 30.

The square root of 11947161 is about 3456.4665483699. The cubic root of 11947161 is about 228.6063232254.

The spelling of 11947161 in words is "eleven million, nine hundred forty-seven thousand, one hundred sixty-one".