139061903 has 2 divisors, whose sum is σ = 139061904. Its totient is φ = 139061902.

The previous prime is 139061891. The next prime is 139061941. The reversal of 139061903 is 309160931.

139061903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139061903 - 2¹⁶ = 138996367 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139061903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139060903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69530951 + 69530952.

It is an arithmetic number, because the mean of its divisors is an integer number (69530952).

Almost surely, 2^139061903 is an apocalyptic number.

139061903 is a deficient number, since it is larger than the sum of its proper divisors (1).

139061903 is an equidigital number, since it uses as much as digits as its factorization.

139061903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 139061903 is about 11792.4511022942. The cubic root of 139061903 is about 518.0870331243.

The spelling of 139061903 in words is "one hundred thirty-nine million, sixty-one thousand, nine hundred three".