9878165 has 8 divisors (see below), whose sum is σ = 12931488. Its totient is φ = 7184080.

The previous prime is 9878153. The next prime is 9878177. The reversal of 9878165 is 5618789.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9878153) and next prime (9878177).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9878165 - 2⁶ = 9878101 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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89747 + ... + 89856.

It is an arithmetic number, because the mean of its divisors is an integer number (1616436).

Almost surely, 2^9878165 is an apocalyptic number.

It is an amenable number.

9878165 is a deficient number, since it is larger than the sum of its proper divisors (3053323).

9878165 is a wasteful number, since it uses less digits than its factorization.

9878165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179619.

The product of its digits is 120960, while the sum is 44.

The square root of 9878165 is about 3142.9548199107. The cubic root of 9878165 is about 214.5649395949.

The spelling of 9878165 in words is "nine million, eight hundred seventy-eight thousand, one hundred sixty-five".