9949911 has 4 divisors (see below), whose sum is σ = 13266552. Its totient is φ = 6633272.

The previous prime is 9949909. The next prime is 9949931. The reversal of 9949911 is 1199499.

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 9949911 - 2¹ = 9949909 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9949931) 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, 1658316 + ... + 1658321.

It is an arithmetic number, because the mean of its divisors is an integer number (3316638).

Almost surely, 2^9949911 is an apocalyptic number.

9949911 is a deficient number, since it is larger than the sum of its proper divisors (3316641).

9949911 is a wasteful number, since it uses less digits than its factorization.

9949911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3316640.

The product of its digits is 26244, while the sum is 42.

The square root of 9949911 is about 3154.3479516375. The cubic root of 9949911 is about 215.0831551426.

The spelling of 9949911 in words is "nine million, nine hundred forty-nine thousand, nine hundred eleven".