9878451 has 16 divisors (see below), whose sum is σ = 14421888. Its totient is φ = 5964800.

The previous prime is 9878419. The next prime is 9878467. The reversal of 9878451 is 1548789.

It is a cyclic number.

It is not a de Polignac number, because 9878451 - 2⁵ = 9878419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9878471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15091 + ... + 15731.

It is an arithmetic number, because the mean of its divisors is an integer number (901368).

Almost surely, 2^9878451 is an apocalyptic number.

9878451 is a deficient number, since it is larger than the sum of its proper divisors (4543437).

9878451 is a wasteful number, since it uses less digits than its factorization.

9878451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122.

The product of its digits is 80640, while the sum is 42.

The square root of 9878451 is about 3143.0003181673. Note that the first 3 decimals coincide. The cubic root of 9878451 is about 214.5670103230.

The spelling of 9878451 in words is "nine million, eight hundred seventy-eight thousand, four hundred fifty-one".