143939169 has 24 divisors (see below), whose sum is σ = 234134784. Its totient is φ = 84420000.

The previous prime is 143939167. The next prime is 143939179. The reversal of 143939169 is 961939341.

It is not a de Polignac number, because 143939169 - 2¹ = 143939167 is a prime.

It is a super-2 number, since 2×143939169² = 41436968744821122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (143939167) 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 23 ways as a sum of consecutive naturals, for example, 20382 + ... + 26519.

It is an arithmetic number, because the mean of its divisors is an integer number (9755616).

Almost surely, 2^143939169 is an apocalyptic number.

It is an amenable number.

143939169 is a deficient number, since it is larger than the sum of its proper divisors (90195615).

143939169 is a wasteful number, since it uses less digits than its factorization.

143939169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46949 (or 46946 counting only the distinct ones).

The product of its digits is 157464, while the sum is 45.

The square root of 143939169 is about 11997.4651072633. The cubic root of 143939169 is about 524.0744618169.

The spelling of 143939169 in words is "one hundred forty-three million, nine hundred thirty-nine thousand, one hundred sixty-nine".