9879155 has 32 divisors (see below), whose sum is σ = 14309568. Its totient is φ = 6451200.

The previous prime is 9879151. The next prime is 9879157. The reversal of 9879155 is 5519789.

It is a happy number.

It is not a de Polignac number, because 9879155 - 2² = 9879151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9879151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29147 + ... + 29483.

It is an arithmetic number, because the mean of its divisors is an integer number (447174).

Almost surely, 2^9879155 is an apocalyptic number.

9879155 is a deficient number, since it is larger than the sum of its proper divisors (4430413).

9879155 is a wasteful number, since it uses less digits than its factorization.

9879155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407.

The product of its digits is 113400, while the sum is 44.

The square root of 9879155 is about 3143.1123110700. The cubic root of 9879155 is about 214.5721073295.

The spelling of 9879155 in words is "nine million, eight hundred seventy-nine thousand, one hundred fifty-five".