9920011 has 4 divisors (see below), whose sum is σ = 9927792. Its totient is φ = 9912232.

The previous prime is 9919997. The next prime is 9920021. The reversal of 9920011 is 1100299.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1100299 = 181 ⋅6079.

It is a cyclic number.

It is not a de Polignac number, because 9920011 - 2⁵ = 9919979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9920021) 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 3 ways as a sum of consecutive naturals, for example, 1480 + ... + 4693.

It is an arithmetic number, because the mean of its divisors is an integer number (2481948).

Almost surely, 2^9920011 is an apocalyptic number.

9920011 is a deficient number, since it is larger than the sum of its proper divisors (7781).

9920011 is a wasteful number, since it uses less digits than its factorization.

9920011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7780.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 9920011 is about 3149.6048958560. The cubic root of 9920011 is about 214.8674936178.

The spelling of 9920011 in words is "nine million, nine hundred twenty thousand, eleven".