143093891 has 2 divisors, whose sum is σ = 143093892. Its totient is φ = 143093890.

The previous prime is 143093869. The next prime is 143093927. The reversal of 143093891 is 198390341.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 143093891 - 2¹⁴ = 143077507 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (143093831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71546945 + 71546946.

It is an arithmetic number, because the mean of its divisors is an integer number (71546946).

Almost surely, 2^143093891 is an apocalyptic number.

143093891 is a deficient number, since it is larger than the sum of its proper divisors (1).

143093891 is an equidigital number, since it uses as much as digits as its factorization.

143093891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 143093891 is about 11962.1858788434. The cubic root of 143093891 is about 523.0465771406.

The spelling of 143093891 in words is "one hundred forty-three million, ninety-three thousand, eight hundred ninety-one".