878484447 has 20 divisors (see below), whose sum is σ = 1313147176. Its totient is φ = 585280080.

The previous prime is 878484433. The next prime is 878484461. The reversal of 878484447 is 744484878.

It is an interprime number because it is at equal distance from previous prime (878484433) and next prime (878484461).

It is not a de Polignac number, because 878484447 - 2⁷ = 878484319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 878484393 and 878484402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878484427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 187797 + ... + 192417.

Almost surely, 2^878484447 is an apocalyptic number.

878484447 is a deficient number, since it is larger than the sum of its proper divisors (434662729).

878484447 is a wasteful number, since it uses less digits than its factorization.

878484447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6980 (or 6971 counting only the distinct ones).

The product of its digits is 6422528, while the sum is 54.

The square root of 878484447 is about 29639.2382999294. The cubic root of 878484447 is about 957.7335302421.

The spelling of 878484447 in words is "eight hundred seventy-eight million, four hundred eighty-four thousand, four hundred forty-seven".