139035109 has 2 divisors, whose sum is σ = 139035110. Its totient is φ = 139035108.

The previous prime is 139035097. The next prime is 139035119. The reversal of 139035109 is 901530931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115240225 + 23794884 = 10735^2 + 4878^2 .

It is a cyclic number.

It is not a de Polignac number, because 139035109 - 2⁷ = 139034981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139035119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69517554 + 69517555.

It is an arithmetic number, because the mean of its divisors is an integer number (69517555).

Almost surely, 2^139035109 is an apocalyptic number.

It is an amenable number.

139035109 is a deficient number, since it is larger than the sum of its proper divisors (1).

139035109 is an equidigital number, since it uses as much as digits as its factorization.

139035109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3645, while the sum is 31.

The square root of 139035109 is about 11791.3149817991. The cubic root of 139035109 is about 518.0537565395.

The spelling of 139035109 in words is "one hundred thirty-nine million, thirty-five thousand, one hundred nine".