143489389 has 4 divisors (see below), whose sum is σ = 144369856. Its totient is φ = 142608924.

The previous prime is 143489383. The next prime is 143489393. The reversal of 143489389 is 983984341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143489389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143489383) 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, 439989 + ... + 440314.

It is an arithmetic number, because the mean of its divisors is an integer number (36092464).

Almost surely, 2^143489389 is an apocalyptic number.

It is an amenable number.

143489389 is a deficient number, since it is larger than the sum of its proper divisors (880467).

143489389 is an equidigital number, since it uses as much as digits as its factorization.

143489389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880466.

The product of its digits is 746496, while the sum is 49.

The square root of 143489389 is about 11978.7056479404. The cubic root of 143489389 is about 523.5280176404.

The spelling of 143489389 in words is "one hundred forty-three million, four hundred eighty-nine thousand, three hundred eighty-nine".