4878917 has 4 divisors (see below), whose sum is σ = 4883340. Its totient is φ = 4874496.

The previous prime is 4878893. The next prime is 4878919. The reversal of 4878917 is 7198784.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1515361 + 3363556 = 1231^2 + 1834^2 .

It is a cyclic number.

It is not a de Polignac number, because 4878917 - 2⁸ = 4878661 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4878919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 959 + ... + 3267.

It is an arithmetic number, because the mean of its divisors is an integer number (1220835).

Almost surely, 2^4878917 is an apocalyptic number.

It is an amenable number.

4878917 is a deficient number, since it is larger than the sum of its proper divisors (4423).

4878917 is a wasteful number, since it uses less digits than its factorization.

4878917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4422.

The product of its digits is 112896, while the sum is 44.

The square root of 4878917 is about 2208.8270643036. The cubic root of 4878917 is about 169.6059732418.

The spelling of 4878917 in words is "four million, eight hundred seventy-eight thousand, nine hundred seventeen".