4778917 has 16 divisors (see below), whose sum is σ = 5862528. Its totient is φ = 3833280.

The previous prime is 4778869. The next prime is 4778927. The reversal of 4778917 is 7198774.

It is not a de Polignac number, because 4778917 - 2¹⁵ = 4746149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4778927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2563 + ... + 4015.

It is an arithmetic number, because the mean of its divisors is an integer number (366408).

Almost surely, 2^4778917 is an apocalyptic number.

It is an amenable number.

4778917 is a deficient number, since it is larger than the sum of its proper divisors (1083611).

4778917 is a wasteful number, since it uses less digits than its factorization.

4778917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500.

The product of its digits is 98784, while the sum is 43.

The square root of 4778917 is about 2186.0734205420. The cubic root of 4778917 is about 168.4391970977.

The spelling of 4778917 in words is "four million, seven hundred seventy-eight thousand, nine hundred seventeen".