139043943 has 24 divisors (see below), whose sum is σ = 205068240. Its totient is φ = 90758400.

The previous prime is 139043929. The next prime is 139043953. The reversal of 139043943 is 349340931.

It is not a de Polignac number, because 139043943 - 2⁵ = 139043911 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 139043898 and 139043907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139043953) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 212605 + ... + 213257.

It is an arithmetic number, because the mean of its divisors is an integer number (8544510).

Almost surely, 2^139043943 is an apocalyptic number.

139043943 is a deficient number, since it is larger than the sum of its proper divisors (66024297).

139043943 is a wasteful number, since it uses less digits than its factorization.

139043943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119 (or 1116 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 139043943 is about 11791.6895735938. The cubic root of 139043943 is about 518.0647283245.

The spelling of 139043943 in words is "one hundred thirty-nine million, forty-three thousand, nine hundred forty-three".