139348903 has 4 divisors (see below), whose sum is σ = 139392928. Its totient is φ = 139304880.

The previous prime is 139348901. The next prime is 139348921. The reversal of 139348903 is 309843931.

139348903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 309843931 = 1231 ⋅251701.

It is a cyclic number.

It is not a de Polignac number, because 139348903 - 2¹ = 139348901 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 (139348901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16863 + ... + 23728.

It is an arithmetic number, because the mean of its divisors is an integer number (34848232).

Almost surely, 2^139348903 is an apocalyptic number.

139348903 is a deficient number, since it is larger than the sum of its proper divisors (44025).

139348903 is an equidigital number, since it uses as much as digits as its factorization.

139348903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44024.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 139348903 is about 11804.6136319661. The cubic root of 139348903 is about 518.4432025748.

The spelling of 139348903 in words is "one hundred thirty-nine million, three hundred forty-eight thousand, nine hundred three".