9720869 has 4 divisors (see below), whose sum is σ = 9927744. Its totient is φ = 9513996.

The previous prime is 9720863. The next prime is 9720883. The reversal of 9720869 is 9680279.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9720869 - 2¹⁶ = 9655333 is a prime.

It is a super-2 number, since 2×9720869² = 188990588230322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9720863) 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, 103367 + ... + 103460.

It is an arithmetic number, because the mean of its divisors is an integer number (2481936).

Almost surely, 2^9720869 is an apocalyptic number.

It is an amenable number.

9720869 is a deficient number, since it is larger than the sum of its proper divisors (206875).

9720869 is a wasteful number, since it uses less digits than its factorization.

9720869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206874.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 9720869 is about 3117.8308164492. The cubic root of 9720869 is about 213.4199580393.

The spelling of 9720869 in words is "nine million, seven hundred twenty thousand, eight hundred sixty-nine".