4878869 has 2 divisors, whose sum is σ = 4878870. Its totient is φ = 4878868.

The previous prime is 4878851. The next prime is 4878871. The reversal of 4878869 is 9688784.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3378244 + 1500625 = 1838^2 + 1225^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4878869 is a prime.

It is a super-2 number, since 2×4878869² = 47606725438322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 4878871, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4878889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2439434 + 2439435.

It is an arithmetic number, because the mean of its divisors is an integer number (2439435).

Almost surely, 2^4878869 is an apocalyptic number.

It is an amenable number.

4878869 is a deficient number, since it is larger than the sum of its proper divisors (1).

4878869 is an equidigital number, since it uses as much as digits as its factorization.

4878869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 774144, while the sum is 50.

The square root of 4878869 is about 2208.8161987816. The cubic root of 4878869 is about 169.6054170314.

The spelling of 4878869 in words is "four million, eight hundred seventy-eight thousand, eight hundred sixty-nine".