11963947 has 2 divisors, whose sum is σ = 11963948. Its totient is φ = 11963946.

The previous prime is 11963929. The next prime is 11963953. The reversal of 11963947 is 74936911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11963947 - 2¹¹ = 11961899 is a prime.

It is not a weakly prime, because it can be changed into another prime (11963927) 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, 5981973 + 5981974.

It is an arithmetic number, because the mean of its divisors is an integer number (5981974).

Almost surely, 2^11963947 is an apocalyptic number.

11963947 is a deficient number, since it is larger than the sum of its proper divisors (1).

11963947 is an equidigital number, since it uses as much as digits as its factorization.

11963947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 40.

The square root of 11963947 is about 3458.8938983438. The cubic root of 11963947 is about 228.7133386059.

The spelling of 11963947 in words is "eleven million, nine hundred sixty-three thousand, nine hundred forty-seven".