139163943 has 8 divisors (see below), whose sum is σ = 185731056. Its totient is φ = 92686400.

The previous prime is 139163909. The next prime is 139163971. The reversal of 139163943 is 349361931.

139163943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139163943 - 2¹² = 139159847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139167943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18678 + ... + 25043.

It is an arithmetic number, because the mean of its divisors is an integer number (23216382).

Almost surely, 2^139163943 is an apocalyptic number.

139163943 is a deficient number, since it is larger than the sum of its proper divisors (46567113).

139163943 is a wasteful number, since it uses less digits than its factorization.

139163943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44785.

The product of its digits is 52488, while the sum is 39.

The square root of 139163943 is about 11796.7768055516. The cubic root of 139163943 is about 518.2137217297.

The spelling of 139163943 in words is "one hundred thirty-nine million, one hundred sixty-three thousand, nine hundred forty-three".