143928009 has 45 divisors (see below), whose sum is σ = 227449629. Its totient is φ = 90697320.

The previous prime is 143928007. The next prime is 143928011. The reversal of 143928009 is 900829341.

The square root of 143928009 is 11997.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (143928007) and next prime (143928011).

It is not a de Polignac number, because 143928009 - 2¹ = 143928007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (143928007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 3347142 + ... + 3347184.

Almost surely, 2^143928009 is an apocalyptic number.

143928009 is the 11997-th square number.

143928009 is the 5999-th centered octagonal number.

It is an amenable number.

143928009 is a deficient number, since it is larger than the sum of its proper divisors (83521620).

143928009 is an frugal number, since it uses more digits than its factorization.

143928009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The cubic root of 143928009 is about 524.0609171550.

Multiplying 143928009 by its sum of digits (36), we get a square (5181408324 = 71982²).

The spelling of 143928009 in words is "one hundred forty-three million, nine hundred twenty-eight thousand, nine".