139053943 has 6 divisors (see below), whose sum is σ = 158954456. Its totient is φ = 119162352.

The previous prime is 139053911. The next prime is 139053947. The reversal of 139053943 is 349350931.

It is not a de Polignac number, because 139053943 - 2⁵ = 139053911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139053947) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28971 + ... + 33427.

Almost surely, 2^139053943 is an apocalyptic number.

139053943 is a deficient number, since it is larger than the sum of its proper divisors (19900513).

139053943 is an frugal number, since it uses more digits than its factorization.

139053943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8921 (or 4464 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 37.

The square root of 139053943 is about 11792.1135934149. The cubic root of 139053943 is about 518.0771477151.

The spelling of 139053943 in words is "one hundred thirty-nine million, fifty-three thousand, nine hundred forty-three".