143359889 has 4 divisors (see below), whose sum is σ = 144837924. Its totient is φ = 141881856.

The previous prime is 143359877. The next prime is 143359891. The reversal of 143359889 is 988953341.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31360000 + 111999889 = 5600^2 + 10583^2 .

It is a cyclic number.

It is not a de Polignac number, because 143359889 - 2⁴ = 143359873 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (143359819) 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, 738872 + ... + 739065.

It is an arithmetic number, because the mean of its divisors is an integer number (36209481).

Almost surely, 2^143359889 is an apocalyptic number.

It is an amenable number.

143359889 is a deficient number, since it is larger than the sum of its proper divisors (1478035).

143359889 is an equidigital number, since it uses as much as digits as its factorization.

143359889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1478034.

The product of its digits is 933120, while the sum is 50.

The square root of 143359889 is about 11973.2990023636. The cubic root of 143359889 is about 523.3704745526.

The spelling of 143359889 in words is "one hundred forty-three million, three hundred fifty-nine thousand, eight hundred eighty-nine".