9920939 has 8 divisors (see below), whose sum is σ = 11363328. Its totient is φ = 8484840.

The previous prime is 9920923. The next prime is 9920947. The reversal of 9920939 is 9390299.

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

It is not a de Polignac number, because 9920939 - 2⁴ = 9920923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9920896 and 9920905.

It is not an unprimeable number, because it can be changed into a prime (9920539) 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, 2534 + ... + 5124.

It is an arithmetic number, because the mean of its divisors is an integer number (1420416).

Almost surely, 2^9920939 is an apocalyptic number.

9920939 is a deficient number, since it is larger than the sum of its proper divisors (1442389).

9920939 is a wasteful number, since it uses less digits than its factorization.

9920939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3145.

The product of its (nonzero) digits is 39366, while the sum is 41.

The square root of 9920939 is about 3149.7522124764. The cubic root of 9920939 is about 214.8741935707.

The spelling of 9920939 in words is "nine million, nine hundred twenty thousand, nine hundred thirty-nine".