9523139 has 2 divisors, whose sum is σ = 9523140. Its totient is φ = 9523138.

The previous prime is 9523121. The next prime is 9523141. The reversal of 9523139 is 9313259.

9523139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (9313259) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9523139 - 2¹² = 9519043 is a prime.

Together with 9523141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9523039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4761569 + 4761570.

It is an arithmetic number, because the mean of its divisors is an integer number (4761570).

Almost surely, 2^9523139 is an apocalyptic number.

9523139 is a deficient number, since it is larger than the sum of its proper divisors (1).

9523139 is an equidigital number, since it uses as much as digits as its factorization.

9523139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7290, while the sum is 32.

The square root of 9523139 is about 3085.9583600561. The cubic root of 9523139 is about 211.9629919380.

The spelling of 9523139 in words is "nine million, five hundred twenty-three thousand, one hundred thirty-nine".