139103863 has 2 divisors, whose sum is σ = 139103864. Its totient is φ = 139103862.

The previous prime is 139103821. The next prime is 139103891. The reversal of 139103863 is 368301931.

139103863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139103863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139103803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69551931 + 69551932.

It is an arithmetic number, because the mean of its divisors is an integer number (69551932).

Almost surely, 2^139103863 is an apocalyptic number.

139103863 is a deficient number, since it is larger than the sum of its proper divisors (1).

139103863 is an equidigital number, since it uses as much as digits as its factorization.

139103863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 139103863 is about 11794.2300723701. The cubic root of 139103863 is about 518.1391364091.

The spelling of 139103863 in words is "one hundred thirty-nine million, one hundred three thousand, eight hundred sixty-three".