143539983 has 12 divisors (see below), whose sum is σ = 212939688. Its totient is φ = 93106800.

The previous prime is 143539961. The next prime is 143539997. The reversal of 143539983 is 389935341.

It is not a de Polignac number, because 143539983 - 2¹⁶ = 143474447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143539943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 215193 + ... + 215858.

It is an arithmetic number, because the mean of its divisors is an integer number (17744974).

Almost surely, 2^143539983 is an apocalyptic number.

143539983 is a deficient number, since it is larger than the sum of its proper divisors (69399705).

143539983 is a wasteful number, since it uses less digits than its factorization.

143539983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431094 (or 431091 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 143539983 is about 11980.8172926558. The cubic root of 143539983 is about 523.5895419668.

It can be divided in two parts, 14353 and 9983, that added together give a square (24336 = 156²).

The spelling of 143539983 in words is "one hundred forty-three million, five hundred thirty-nine thousand, nine hundred eighty-three".