11856947 has 2 divisors, whose sum is σ = 11856948. Its totient is φ = 11856946.

The previous prime is 11856919. The next prime is 11856953. The reversal of 11856947 is 74965811.

11856947 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11856947 - 2⁶ = 11856883 is a prime.

It is not a weakly prime, because it can be changed into another prime (11856547) 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 as a sum of consecutive naturals, namely, 5928473 + 5928474.

It is an arithmetic number, because the mean of its divisors is an integer number (5928474).

Almost surely, 2^11856947 is an apocalyptic number.

11856947 is a deficient number, since it is larger than the sum of its proper divisors (1).

11856947 is an equidigital number, since it uses as much as digits as its factorization.

11856947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 41.

The square root of 11856947 is about 3443.3917871773. The cubic root of 11856947 is about 228.0294603873.

The spelling of 11856947 in words is "eleven million, eight hundred fifty-six thousand, nine hundred forty-seven".