139385543 has 16 divisors (see below), whose sum is σ = 160862976. Its totient is φ = 119528640.

The previous prime is 139385537. The next prime is 139385551. The reversal of 139385543 is 345583931.

It is a happy number.

It is not a de Polignac number, because 139385543 - 2⁸ = 139385287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 139385543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139385563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14696 + ... + 22242.

It is an arithmetic number, because the mean of its divisors is an integer number (10053936).

Almost surely, 2^139385543 is an apocalyptic number.

139385543 is a deficient number, since it is larger than the sum of its proper divisors (21477433).

139385543 is a wasteful number, since it uses less digits than its factorization.

139385543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7654.

The product of its digits is 194400, while the sum is 41.

The square root of 139385543 is about 11806.1654655523. The cubic root of 139385543 is about 518.4886379146.

The spelling of 139385543 in words is "one hundred thirty-nine million, three hundred eighty-five thousand, five hundred forty-three".