9879425 has 12 divisors (see below), whose sum is σ = 12342960. Its totient is φ = 7843920.

The previous prime is 9879413. The next prime is 9879427. The reversal of 9879425 is 5249789.

It is a happy number.

It is not a de Polignac number, because 9879425 - 2⁴ = 9879409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9879427) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2054 + ... + 4896.

It is an arithmetic number, because the mean of its divisors is an integer number (1028580).

Almost surely, 2^9879425 is an apocalyptic number.

It is an amenable number.

9879425 is a deficient number, since it is larger than the sum of its proper divisors (2463535).

9879425 is a wasteful number, since it uses less digits than its factorization.

9879425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2992 (or 2987 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The square root of 9879425 is about 3143.1552618348. The cubic root of 9879425 is about 214.5740620831.

The spelling of 9879425 in words is "nine million, eight hundred seventy-nine thousand, four hundred twenty-five".