11873947 has 4 divisors (see below), whose sum is σ = 11880856. Its totient is φ = 11867040.

The previous prime is 11873933. The next prime is 11873951. The reversal of 11873947 is 74937811.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11873947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11873987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1372 + ... + 5062.

It is an arithmetic number, because the mean of its divisors is an integer number (2970214).

Almost surely, 2^11873947 is an apocalyptic number.

11873947 is a deficient number, since it is larger than the sum of its proper divisors (6909).

11873947 is an equidigital number, since it uses as much as digits as its factorization.

11873947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6908.

The product of its digits is 42336, while the sum is 40.

The square root of 11873947 is about 3445.8593993371. The cubic root of 11873947 is about 228.1383880802.

The spelling of 11873947 in words is "eleven million, eight hundred seventy-three thousand, nine hundred forty-seven".