9870709 has 8 divisors (see below), whose sum is σ = 10644480. Its totient is φ = 9122400.

The previous prime is 9870691. The next prime is 9870737. The reversal of 9870709 is 9070789.

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 9870709 - 2⁵ = 9870677 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9870409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5557 + ... + 7114.

It is an arithmetic number, because the mean of its divisors is an integer number (1330560).

Almost surely, 2^9870709 is an apocalyptic number.

It is an amenable number.

9870709 is a deficient number, since it is larger than the sum of its proper divisors (773771).

9870709 is a wasteful number, since it uses less digits than its factorization.

9870709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12731.

The product of its (nonzero) digits is 31752, while the sum is 40.

The square root of 9870709 is about 3141.7684510479. The cubic root of 9870709 is about 214.5109417500.

It can be divided in two parts, 98 and 70709, that added together give a palindrome (70807).

The spelling of 9870709 in words is "nine million, eight hundred seventy thousand, seven hundred nine".