878121883 has 2 divisors, whose sum is σ = 878121884. Its totient is φ = 878121882.

The previous prime is 878121863. The next prime is 878121919. The reversal of 878121883 is 388121878.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 878121883 - 2¹⁷ = 877990811 is a prime.

It is not a weakly prime, because it can be changed into another prime (878121863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439060941 + 439060942.

It is an arithmetic number, because the mean of its divisors is an integer number (439060942).

Almost surely, 2^878121883 is an apocalyptic number.

878121883 is a deficient number, since it is larger than the sum of its proper divisors (1).

878121883 is an equidigital number, since it uses as much as digits as its factorization.

878121883 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172032, while the sum is 46.

The square root of 878121883 is about 29633.1213846939. The cubic root of 878121883 is about 957.6017550080.

The spelling of 878121883 in words is "eight hundred seventy-eight million, one hundred twenty-one thousand, eight hundred eighty-three".