139065349 has 6 divisors (see below), whose sum is σ = 143697030. Its totient is φ = 134578440.

The previous prime is 139065343. The next prime is 139065391. The reversal of 139065349 is 943560931.

It can be written as a sum of positive squares in only one way, i.e., 88228449 + 50836900 = 9393^2 + 7130^2 .

It is not a de Polignac number, because 139065349 - 2³ = 139065341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139065341) 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 in 5 ways as a sum of consecutive naturals, for example, 71394 + ... + 73315.

It is an arithmetic number, because the mean of its divisors is an integer number (23949505).

Almost surely, 2^139065349 is an apocalyptic number.

It is an amenable number.

139065349 is a deficient number, since it is larger than the sum of its proper divisors (4631681).

139065349 is an equidigital number, since it uses as much as digits as its factorization.

139065349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144771 (or 144740 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 139065349 is about 11792.5972118105. The cubic root of 139065349 is about 518.0913125451.

The spelling of 139065349 in words is "one hundred thirty-nine million, sixty-five thousand, three hundred forty-nine".