9309139241 has 2 divisors, whose sum is σ = 9309139242. Its totient is φ = 9309139240.

The previous prime is 9309139199. The next prime is 9309139249. The reversal of 9309139241 is 1429319039.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9101923216 + 207216025 = 95404^2 + 14395^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9309139241 is a prime.

It is not a weakly prime, because it can be changed into another prime (9309139249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4654569620 + 4654569621.

It is an arithmetic number, because the mean of its divisors is an integer number (4654569621).

Almost surely, 2^9309139241 is an apocalyptic number.

It is an amenable number.

9309139241 is a deficient number, since it is larger than the sum of its proper divisors (1).

9309139241 is an equidigital number, since it uses as much as digits as its factorization.

9309139241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 9309139241 is about 96483.8807314465. The cubic root of 9309139241 is about 2103.6323560701.

The spelling of 9309139241 in words is "nine billion, three hundred nine million, one hundred thirty-nine thousand, two hundred forty-one".