11888947 has 8 divisors (see below), whose sum is σ = 13760000. Its totient is φ = 10061064.

The previous prime is 11888939. The next prime is 11888963. The reversal of 11888947 is 74988811.

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 11888947 - 2³ = 11888939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11888897 and 11888906.

It is not an unprimeable number, because it can be changed into a prime (11888917) 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 7 ways as a sum of consecutive naturals, for example, 10197 + ... + 11302.

It is an arithmetic number, because the mean of its divisors is an integer number (1720000).

Almost surely, 2^11888947 is an apocalyptic number.

11888947 is a deficient number, since it is larger than the sum of its proper divisors (1871053).

11888947 is an equidigital number, since it uses as much as digits as its factorization.

11888947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21585.

The product of its digits is 129024, while the sum is 46.

The square root of 11888947 is about 3448.0352376390. The cubic root of 11888947 is about 228.2344144431.

The spelling of 11888947 in words is "eleven million, eight hundred eighty-eight thousand, nine hundred forty-seven".