143529989 has 8 divisors (see below), whose sum is σ = 147691512. Its totient is φ = 139422400.

The previous prime is 143529983. The next prime is 143530003. The reversal of 143529989 is 989925341.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 91833889 + 51696100 = 9583^2 + 7190^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 143529989 - 2⁴ = 143529973 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143529983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8054 + ... + 18759.

It is an arithmetic number, because the mean of its divisors is an integer number (18461439).

Almost surely, 2^143529989 is an apocalyptic number.

It is an amenable number.

143529989 is a deficient number, since it is larger than the sum of its proper divisors (4161523).

143529989 is a wasteful number, since it uses less digits than its factorization.

143529989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26967.

The product of its digits is 699840, while the sum is 50.

The square root of 143529989 is about 11980.4002019966. The cubic root of 143529989 is about 523.5773900092.

The spelling of 143529989 in words is "one hundred forty-three million, five hundred twenty-nine thousand, nine hundred eighty-nine".