4979768217 has 8 divisors (see below), whose sum is σ = 6651486624. Its totient is φ = 3313947648.

The previous prime is 4979768141. The next prime is 4979768267. The reversal of 4979768217 is 7128679794.

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

It is a de Polignac number, because none of the positive numbers 2^k-4979768217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4979768267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1472488 + ... + 1475865.

It is an arithmetic number, because the mean of its divisors is an integer number (831435828).

Almost surely, 2^4979768217 is an apocalyptic number.

It is an amenable number.

4979768217 is a deficient number, since it is larger than the sum of its proper divisors (1671718407).

4979768217 is a wasteful number, since it uses less digits than its factorization.

4979768217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2948919.

The product of its digits is 10668672, while the sum is 60.

The square root of 4979768217 is about 70567.4727973165. The cubic root of 4979768217 is about 1707.6664380189. Note that the first 3 decimals are identical.

The spelling of 4979768217 in words is "four billion, nine hundred seventy-nine million, seven hundred sixty-eight thousand, two hundred seventeen".