11985147 has 6 divisors (see below), whose sum is σ = 17311892. Its totient is φ = 7990092.

The previous prime is 11985137. The next prime is 11985163. The reversal of 11985147 is 74158911.

It is not a de Polignac number, because 11985147 - 2⁴ = 11985131 is a prime.

It is a super-2 number, since 2×11985147² = 287287497223218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11985137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 665833 + ... + 665850.

Almost surely, 2^11985147 is an apocalyptic number.

11985147 is a deficient number, since it is larger than the sum of its proper divisors (5326745).

11985147 is a wasteful number, since it uses less digits than its factorization.

11985147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331689 (or 1331686 counting only the distinct ones).

The product of its digits is 10080, while the sum is 36.

The square root of 11985147 is about 3461.9571054535. The cubic root of 11985147 is about 228.8483515085.

The spelling of 11985147 in words is "eleven million, nine hundred eighty-five thousand, one hundred forty-seven".