878291966 has 4 divisors (see below), whose sum is σ = 1317437952. Its totient is φ = 439145982.

The previous prime is 878291959. The next prime is 878291971. The reversal of 878291966 is 669192878.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 219572990 + ... + 219572993.

It is an arithmetic number, because the mean of its divisors is an integer number (329359488).

Almost surely, 2^878291966 is an apocalyptic number.

878291966 is a deficient number, since it is larger than the sum of its proper divisors (439145986).

878291966 is a wasteful number, since it uses less digits than its factorization.

878291966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439145985.

The product of its digits is 2612736, while the sum is 56.

The square root of 878291966 is about 29635.9910581711. The cubic root of 878291966 is about 957.6635768226.

The spelling of 878291966 in words is "eight hundred seventy-eight million, two hundred ninety-one thousand, nine hundred sixty-six".