3218428979 has 4 divisors (see below), whose sum is σ = 3305413584. Its totient is φ = 3131444376.

The previous prime is 3218428931. The next prime is 3218428987. The reversal of 3218428979 is 9798248123.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3218428979 - 2²⁴ = 3201651763 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3218428979.

It is not an unprimeable number, because it can be changed into a prime (3218428909) 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 3 ways as a sum of consecutive naturals, for example, 43492247 + ... + 43492320.

It is an arithmetic number, because the mean of its divisors is an integer number (826353396).

Almost surely, 2^3218428979 is an apocalyptic number.

3218428979 is a deficient number, since it is larger than the sum of its proper divisors (86984605).

3218428979 is an equidigital number, since it uses as much as digits as its factorization.

3218428979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86984604.

The product of its digits is 1741824, while the sum is 53.

The square root of 3218428979 is about 56731.1993439236. The cubic root of 3218428979 is about 1476.4360586832.

The spelling of 3218428979 in words is "three billion, two hundred eighteen million, four hundred twenty-eight thousand, nine hundred seventy-nine".