9911939 has 8 divisors (see below), whose sum is σ = 10794000. Its totient is φ = 9065952.

The previous prime is 9911929. The next prime is 9911953. The reversal of 9911939 is 9391199.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9911939 - 2⁸ = 9911683 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9911896 and 9911905.

It is not an unprimeable number, because it can be changed into a prime (9911929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8444 + ... + 9545.

It is an arithmetic number, because the mean of its divisors is an integer number (1349250).

Almost surely, 2^9911939 is an apocalyptic number.

9911939 is a deficient number, since it is larger than the sum of its proper divisors (882061).

9911939 is a wasteful number, since it uses less digits than its factorization.

9911939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18037.

The product of its digits is 19683, while the sum is 41.

The square root of 9911939 is about 3148.3232045011. The cubic root of 9911939 is about 214.8091979481.

The spelling of 9911939 in words is "nine million, nine hundred eleven thousand, nine hundred thirty-nine".