9878417 has 8 divisors (see below), whose sum is σ = 10160640. Its totient is φ = 9598240.

The previous prime is 9878399. The next prime is 9878419. The reversal of 9878417 is 7148789.

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 9878417 - 2⁶ = 9878353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9878419) 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 7 ways as a sum of consecutive naturals, for example, 19388 + ... + 19890.

It is an arithmetic number, because the mean of its divisors is an integer number (1270080).

Almost surely, 2^9878417 is an apocalyptic number.

It is an amenable number.

9878417 is a deficient number, since it is larger than the sum of its proper divisors (282223).

9878417 is a wasteful number, since it uses less digits than its factorization.

9878417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023.

The product of its digits is 112896, while the sum is 44.

The square root of 9878417 is about 3142.9949093182. The cubic root of 9878417 is about 214.5667641546.

The spelling of 9878417 in words is "nine million, eight hundred seventy-eight thousand, four hundred seventeen".