143398889 has 2 divisors, whose sum is σ = 143398890. Its totient is φ = 143398888.

The previous prime is 143398781. The next prime is 143398967. The reversal of 143398889 is 988893341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73960000 + 69438889 = 8600^2 + 8333^2 .

It is an emirp because it is prime and its reverse (988893341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 143398889 - 2²⁴ = 126621673 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 143398889.

It is not a weakly prime, because it can be changed into another prime (143398289) 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, 71699444 + 71699445.

It is an arithmetic number, because the mean of its divisors is an integer number (71699445).

Almost surely, 2^143398889 is an apocalyptic number.

It is an amenable number.

143398889 is a deficient number, since it is larger than the sum of its proper divisors (1).

143398889 is an equidigital number, since it uses as much as digits as its factorization.

143398889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 53.

The square root of 143398889 is about 11974.9275154382. The cubic root of 143398889 is about 523.4179299415.

The spelling of 143398889 in words is "one hundred forty-three million, three hundred ninety-eight thousand, eight hundred eighty-nine".