11894143 has 4 divisors (see below), whose sum is σ = 11956608. Its totient is φ = 11831680.

The previous prime is 11894117. The next prime is 11894159. The reversal of 11894143 is 34149811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34149811 = 5051 ⋅6761.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11894143 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11892143) 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, 30946 + ... + 31327.

It is an arithmetic number, because the mean of its divisors is an integer number (2989152).

Almost surely, 2^11894143 is an apocalyptic number.

11894143 is a deficient number, since it is larger than the sum of its proper divisors (62465).

11894143 is an equidigital number, since it uses as much as digits as its factorization.

11894143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62464.

The product of its digits is 3456, while the sum is 31.

The square root of 11894143 is about 3448.7886279098. The cubic root of 11894143 is about 228.2676591393.

The spelling of 11894143 in words is "eleven million, eight hundred ninety-four thousand, one hundred forty-three".