11947075 has 24 divisors (see below), whose sum is σ = 17061408. Its totient is φ = 8129280.

The previous prime is 11947049. The next prime is 11947079. The reversal of 11947075 is 57074911.

It is not a de Polignac number, because 11947075 - 2¹⁵ = 11914307 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 11947075.

It is not an unprimeable number, because it can be changed into a prime (11947079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40629 + ... + 40921.

It is an arithmetic number, because the mean of its divisors is an integer number (710892).

Almost surely, 2^11947075 is an apocalyptic number.

11947075 is a deficient number, since it is larger than the sum of its proper divisors (5114333).

11947075 is a wasteful number, since it uses less digits than its factorization.

11947075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543 (or 538 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 34.

The square root of 11947075 is about 3456.4541078973. The cubic root of 11947075 is about 228.6057746937.

The spelling of 11947075 in words is "eleven million, nine hundred forty-seven thousand, seventy-five".