878856982 has 4 divisors (see below), whose sum is σ = 1318285476. Its totient is φ = 439428490.

The previous prime is 878856941. The next prime is 878856997. The reversal of 878856982 is 289658878.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 878856982.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 219714244 + ... + 219714247.

It is an arithmetic number, because the mean of its divisors is an integer number (329571369).

Almost surely, 2^878856982 is an apocalyptic number.

878856982 is a deficient number, since it is larger than the sum of its proper divisors (439428494).

878856982 is a wasteful number, since it uses less digits than its factorization.

878856982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439428493.

The product of its digits is 15482880, while the sum is 61.

The square root of 878856982 is about 29645.5221239229. The cubic root of 878856982 is about 957.8688917122.

The spelling of 878856982 in words is "eight hundred seventy-eight million, eight hundred fifty-six thousand, nine hundred eighty-two".