9969869 has 16 divisors (see below), whose sum is σ = 12418560. Its totient is φ = 7793280.

The previous prime is 9969859. The next prime is 9969887. The reversal of 9969869 is 9689699.

It is a cyclic number.

It is not a de Polignac number, because 9969869 - 2⁴ = 9969853 is a prime.

It is a super-2 number, since 2×9969869² = 198796575754322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9969809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7484 + ... + 8714.

It is an arithmetic number, because the mean of its divisors is an integer number (776160).

Almost surely, 2^9969869 is an apocalyptic number.

It is an amenable number.

9969869 is a deficient number, since it is larger than the sum of its proper divisors (2448691).

9969869 is a wasteful number, since it uses less digits than its factorization.

9969869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340.

The product of its digits is 1889568, while the sum is 56.

The square root of 9969869 is about 3157.5099366431. The cubic root of 9969869 is about 215.2268670707.

The spelling of 9969869 in words is "nine million, nine hundred sixty-nine thousand, eight hundred sixty-nine".