878427841 has 8 divisors (see below), whose sum is σ = 902541800. Its totient is φ = 854333568.

The previous prime is 878427769. The next prime is 878427857. The reversal of 878427841 is 148724878.

It can be written as a sum of positive squares in 4 ways, for example, as 424524816 + 453903025 = 20604^2 + 21305^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 878427841 - 2⁷ = 878427713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (878427871) 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 7 ways as a sum of consecutive naturals, for example, 158485 + ... + 163933.

It is an arithmetic number, because the mean of its divisors is an integer number (112817725).

Almost surely, 2^878427841 is an apocalyptic number.

It is an amenable number.

878427841 is a deficient number, since it is larger than the sum of its proper divisors (24113959).

878427841 is a wasteful number, since it uses less digits than its factorization.

878427841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9843.

The product of its digits is 802816, while the sum is 49.

The square root of 878427841 is about 29638.2833679685. The cubic root of 878427841 is about 957.7129589696.

The spelling of 878427841 in words is "eight hundred seventy-eight million, four hundred twenty-seven thousand, eight hundred forty-one".