143289893 has 2 divisors, whose sum is σ = 143289894. Its totient is φ = 143289892.

The previous prime is 143289869. The next prime is 143289941. The reversal of 143289893 is 398982341.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85803169 + 57486724 = 9263^2 + 7582^2 .

It is an emirp because it is prime and its reverse (398982341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 143289893 - 2⁸ = 143289637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143289593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71644946 + 71644947.

It is an arithmetic number, because the mean of its divisors is an integer number (71644947).

Almost surely, 2^143289893 is an apocalyptic number.

It is an amenable number.

143289893 is a deficient number, since it is larger than the sum of its proper divisors (1).

143289893 is an equidigital number, since it uses as much as digits as its factorization.

143289893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 47.

The square root of 143289893 is about 11970.3756415578. The cubic root of 143289893 is about 523.2852814910.

The spelling of 143289893 in words is "one hundred forty-three million, two hundred eighty-nine thousand, eight hundred ninety-three".