11867947 has 24 divisors (see below), whose sum is σ = 15372672. Its totient is φ = 9072000.

The previous prime is 11867941. The next prime is 11867963. The reversal of 11867947 is 74976811.

It is a de Polignac number, because none of the positive numbers 2^k-11867947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11867941) 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 in 23 ways as a sum of consecutive naturals, for example, 19447 + ... + 20047.

It is an arithmetic number, because the mean of its divisors is an integer number (640528).

Almost surely, 2^11867947 is an apocalyptic number.

11867947 is a deficient number, since it is larger than the sum of its proper divisors (3504725).

11867947 is a wasteful number, since it uses less digits than its factorization.

11867947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659 (or 652 counting only the distinct ones).

The product of its digits is 84672, while the sum is 43.

The square root of 11867947 is about 3444.9886792267. The cubic root of 11867947 is about 228.0999548911.

The spelling of 11867947 in words is "eleven million, eight hundred sixty-seven thousand, nine hundred forty-seven".