4809478779 has 24 divisors (see below), whose sum is σ = 8284653312. Its totient is φ = 2628782640.

The previous prime is 4809478753. The next prime is 4809478829. The reversal of 4809478779 is 9778749084.

It is a happy number.

4809478779 is a `hidden beast` number, since 480 + 9 + 4 + 7 + 87 + 79 = 666.

It is not a de Polignac number, because 4809478779 - 2¹¹ = 4809476731 is a prime.

It is a super-3 number, since 3×4809478779³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (4809478579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1658137 + ... + 1661034.

It is an arithmetic number, because the mean of its divisors is an integer number (345193888).

Almost surely, 2^4809478779 is an apocalyptic number.

4809478779 is a deficient number, since it is larger than the sum of its proper divisors (3475174533).

4809478779 is a wasteful number, since it uses less digits than its factorization.

4809478779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3319207 (or 3319204 counting only the distinct ones).

The product of its (nonzero) digits is 28449792, while the sum is 63.

The square root of 4809478779 is about 69350.4057594474. The cubic root of 4809478779 is about 1687.9749771444.

The spelling of 4809478779 in words is "four billion, eight hundred nine million, four hundred seventy-eight thousand, seven hundred seventy-nine".