878212943 has 4 divisors (see below), whose sum is σ = 878393280. Its totient is φ = 878032608.

The previous prime is 878212921. The next prime is 878212949. The reversal of 878212943 is 349212878.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-878212943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 878212894 and 878212903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878212949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82655 + ... + 92672.

It is an arithmetic number, because the mean of its divisors is an integer number (219598320).

Almost surely, 2^878212943 is an apocalyptic number.

878212943 is a deficient number, since it is larger than the sum of its proper divisors (180337).

878212943 is a wasteful number, since it uses less digits than its factorization.

878212943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180336.

The product of its digits is 193536, while the sum is 44.

The square root of 878212943 is about 29634.6578012975. The cubic root of 878212943 is about 957.6348545141.

The spelling of 878212943 in words is "eight hundred seventy-eight million, two hundred twelve thousand, nine hundred forty-three".