12139803 has 48 divisors (see below), whose sum is σ = 20500480. Its totient is φ = 6858432.

The previous prime is 12139789. The next prime is 12139807. The reversal of 12139803 is 30893121.

12139803 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12139803 - 2⁶ = 12139739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12139807) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 95526 + ... + 95652.

Almost surely, 2^12139803 is an apocalyptic number.

12139803 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12139803 is a deficient number, since it is larger than the sum of its proper divisors (8360677).

12139803 is a wasteful number, since it uses less digits than its factorization.

12139803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 12139803 is about 3484.2220078520. Note that the first 3 decimals coincide. The cubic root of 12139803 is about 229.8284984892.

The spelling of 12139803 in words is "twelve million, one hundred thirty-nine thousand, eight hundred three".