10139309 has 2 divisors, whose sum is σ = 10139310. Its totient is φ = 10139308.

The previous prime is 10139303. The next prime is 10139317. The reversal of 10139309 is 90393101.

10139309 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7963684 + 2175625 = 2822^2 + 1475^2 .

It is an emirp because it is prime and its reverse (90393101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10139309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10139303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5069654 + 5069655.

It is an arithmetic number, because the mean of its divisors is an integer number (5069655).

Almost surely, 2^10139309 is an apocalyptic number.

It is an amenable number.

10139309 is a deficient number, since it is larger than the sum of its proper divisors (1).

10139309 is an equidigital number, since it uses as much as digits as its factorization.

10139309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 26.

The square root of 10139309 is about 3184.2281639355. The cubic root of 10139309 is about 216.4392994227.

The spelling of 10139309 in words is "ten million, one hundred thirty-nine thousand, three hundred nine".