9835390343923 has 2 divisors, whose sum is σ = 9835390343924. Its totient is φ = 9835390343922.

The previous prime is 9835390343903. The next prime is 9835390343953. The reversal of 9835390343923 is 3293430935389.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9835390343923 is a prime.

It is not a weakly prime, because it can be changed into another prime (9835390343903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4917695171961 + 4917695171962.

It is an arithmetic number, because the mean of its divisors is an integer number (4917695171962).

Almost surely, 2^{9835390343923} is an apocalyptic number.

9835390343923 is a deficient number, since it is larger than the sum of its proper divisors (1).

9835390343923 is an equidigital number, since it uses as much as digits as its factorization.

9835390343923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56687040, while the sum is 61.

The spelling of 9835390343923 in words is "nine trillion, eight hundred thirty-five billion, three hundred ninety million, three hundred forty-three thousand, nine hundred twenty-three".