9139309 has 2 divisors, whose sum is σ = 9139310. Its totient is φ = 9139308.

The previous prime is 9139297. The next prime is 9139313. The reversal of 9139309 is 9039319.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5978025 + 3161284 = 2445^2 + 1778^2 .

It is an emirp because it is prime and its reverse (9039319) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9139309 - 2⁷ = 9139181 is a prime.

9139309 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9139369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4569654 + 4569655.

It is an arithmetic number, because the mean of its divisors is an integer number (4569655).

Almost surely, 2^9139309 is an apocalyptic number.

It is an amenable number.

9139309 is a deficient number, since it is larger than the sum of its proper divisors (1).

9139309 is an equidigital number, since it uses as much as digits as its factorization.

9139309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6561, while the sum is 34.

The square root of 9139309 is about 3023.1290081636. The cubic root of 9139309 is about 209.0761304729.

The spelling of 9139309 in words is "nine million, one hundred thirty-nine thousand, three hundred nine".