11964143 has 2 divisors, whose sum is σ = 11964144. Its totient is φ = 11964142.

The previous prime is 11964131. The next prime is 11964149. The reversal of 11964143 is 34146911.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11964143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11964149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5982071 + 5982072.

It is an arithmetic number, because the mean of its divisors is an integer number (5982072).

Almost surely, 2^11964143 is an apocalyptic number.

11964143 is a deficient number, since it is larger than the sum of its proper divisors (1).

11964143 is an equidigital number, since it uses as much as digits as its factorization.

11964143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 29.

The square root of 11964143 is about 3458.9222309847. The cubic root of 11964143 is about 228.7145875686.

The spelling of 11964143 in words is "eleven million, nine hundred sixty-four thousand, one hundred forty-three".