9423709 has 2 divisors, whose sum is σ = 9423710. Its totient is φ = 9423708.

The previous prime is 9423697. The next prime is 9423719. The reversal of 9423709 is 9073249.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9060100 + 363609 = 3010^2 + 603^2 .

It is an emirp because it is prime and its reverse (9073249) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9423709 - 2⁷ = 9423581 is a prime.

9423709 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9423719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4711854 + 4711855.

It is an arithmetic number, because the mean of its divisors is an integer number (4711855).

Almost surely, 2^9423709 is an apocalyptic number.

It is an amenable number.

9423709 is a deficient number, since it is larger than the sum of its proper divisors (1).

9423709 is an equidigital number, since it uses as much as digits as its factorization.

9423709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 9423709 is about 3069.8060199302. The cubic root of 9423709 is about 211.2227158021. Note that the first 3 decimals are identical.

The spelling of 9423709 in words is "nine million, four hundred twenty-three thousand, seven hundred nine".