139105349 has 2 divisors, whose sum is σ = 139105350. Its totient is φ = 139105348.

The previous prime is 139105331. The next prime is 139105411. The reversal of 139105349 is 943501931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95452900 + 43652449 = 9770^2 + 6607^2 .

It is an emirp because it is prime and its reverse (943501931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139105349 - 2⁸ = 139105093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139105949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69552674 + 69552675.

It is an arithmetic number, because the mean of its divisors is an integer number (69552675).

Almost surely, 2^139105349 is an apocalyptic number.

It is an amenable number.

139105349 is a deficient number, since it is larger than the sum of its proper divisors (1).

139105349 is an equidigital number, since it uses as much as digits as its factorization.

139105349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 139105349 is about 11794.2930691076. The cubic root of 139105349 is about 518.1409814382.

The spelling of 139105349 in words is "one hundred thirty-nine million, one hundred five thousand, three hundred forty-nine".