9969911 has 8 divisors (see below), whose sum is σ = 11435424. Its totient is φ = 8514720.

The previous prime is 9969907. The next prime is 9969913. The reversal of 9969911 is 1199699.

9969911 = 679² + 680² + ... + 699².

It is a happy number.

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 9969911 - 2² = 9969907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9969913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380 + ... + 4481.

It is an arithmetic number, because the mean of its divisors is an integer number (1429428).

Almost surely, 2^9969911 is an apocalyptic number.

9969911 is a deficient number, since it is larger than the sum of its proper divisors (1465513).

9969911 is a wasteful number, since it uses less digits than its factorization.

9969911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5161.

The product of its digits is 39366, while the sum is 44.

The square root of 9969911 is about 3157.5165874465. The cubic root of 9969911 is about 215.2271692986.

The spelling of 9969911 in words is "nine million, nine hundred sixty-nine thousand, nine hundred eleven".