878773331 has 4 divisors (see below), whose sum is σ = 878980200. Its totient is φ = 878566464.

The previous prime is 878773303. The next prime is 878773387. The reversal of 878773331 is 133377878.

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-878773331 is a prime.

It is a super-2 number, since 2×878773331² = 1544485134553671122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (878713331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96926 + ... + 105603.

It is an arithmetic number, because the mean of its divisors is an integer number (219745050).

Almost surely, 2^878773331 is an apocalyptic number.

878773331 is a deficient number, since it is larger than the sum of its proper divisors (206869).

878773331 is a wasteful number, since it uses less digits than its factorization.

878773331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206868.

The product of its digits is 592704, while the sum is 47.

The square root of 878773331 is about 29644.1112364665. Note that the first 3 decimals coincide. The cubic root of 878773331 is about 957.8385002550.

The spelling of 878773331 in words is "eight hundred seventy-eight million, seven hundred seventy-three thousand, three hundred thirty-one".