9906835123 has 4 divisors (see below), whose sum is σ = 9926689000. Its totient is φ = 9886981248.

The previous prime is 9906835117. The next prime is 9906835151. The reversal of 9906835123 is 3215386099.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9906835123 - 2¹³ = 9906826931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9906835193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9926190 + ... + 9927187.

It is an arithmetic number, because the mean of its divisors is an integer number (2481672250).

Almost surely, 2^9906835123 is an apocalyptic number.

9906835123 is a deficient number, since it is larger than the sum of its proper divisors (19853877).

9906835123 is a wasteful number, since it uses less digits than its factorization.

9906835123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19853876.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 9906835123 is about 99533.0855695733. The cubic root of 9906835123 is about 2147.7232161275.

The spelling of 9906835123 in words is "nine billion, nine hundred six million, eight hundred thirty-five thousand, one hundred twenty-three".