9765139 has 2 divisors, whose sum is σ = 9765140. Its totient is φ = 9765138.

The previous prime is 9765109. The next prime is 9765181. The reversal of 9765139 is 9315679.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9765139 is a prime.

9765139 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (9765109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4882569 + 4882570.

It is an arithmetic number, because the mean of its divisors is an integer number (4882570).

Almost surely, 2^9765139 is an apocalyptic number.

9765139 is a deficient number, since it is larger than the sum of its proper divisors (1).

9765139 is an equidigital number, since it uses as much as digits as its factorization.

9765139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51030, while the sum is 40.

The square root of 9765139 is about 3124.9222390325. The cubic root of 9765139 is about 213.7434474696.

The spelling of 9765139 in words is "nine million, seven hundred sixty-five thousand, one hundred thirty-nine".