9709689 has 16 divisors (see below), whose sum is σ = 14365440. Its totient is φ = 5783760.

The previous prime is 9709673. The next prime is 9709691. The reversal of 9709689 is 9869079.

It is a happy number.

It is not a de Polignac number, because 9709689 - 2⁴ = 9709673 is a prime.

9709689 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9709619) 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, 547 + ... + 4440.

It is an arithmetic number, because the mean of its divisors is an integer number (897840).

Almost surely, 2^9709689 is an apocalyptic number.

It is an amenable number.

9709689 is a deficient number, since it is larger than the sum of its proper divisors (4655751).

9709689 is a wasteful number, since it uses less digits than its factorization.

9709689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5060.

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 9709689 is about 3116.0373874522. The cubic root of 9709689 is about 213.3381083458.

The spelling of 9709689 in words is "nine million, seven hundred nine thousand, six hundred eighty-nine".