878866079 has 12 divisors (see below), whose sum is σ = 1087626096. Its totient is φ = 695365632.

The previous prime is 878866067. The next prime is 878866091. The reversal of 878866079 is 970668878.

It is an interprime number because it is at equal distance from previous prime (878866067) and next prime (878866091).

It is a de Polignac number, because none of the positive numbers 2^k-878866079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878866039) 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 11 ways as a sum of consecutive naturals, for example, 370274 + ... + 372639.

It is an arithmetic number, because the mean of its divisors is an integer number (90635508).

Almost surely, 2^878866079 is an apocalyptic number.

878866079 is a deficient number, since it is larger than the sum of its proper divisors (208760017).

878866079 is a wasteful number, since it uses less digits than its factorization.

878866079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742946 (or 742933 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 59.

The square root of 878866079 is about 29645.6755531055. The cubic root of 878866079 is about 957.8721966501.

The spelling of 878866079 in words is "eight hundred seventy-eight million, eight hundred sixty-six thousand, seventy-nine".