2979804889 has 4 divisors (see below), whose sum is σ = 2979929524. Its totient is φ = 2979680256.

The previous prime is 2979804797. The next prime is 2979804901. The reversal of 2979804889 is 9884089792.

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 1602801225 + 1377003664 = 40035^2 + 37108^2 .

It is a cyclic number.

It is not a de Polignac number, because 2979804889 - 2¹³ = 2979796697 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 2979804889.

It is not an unprimeable number, because it can be changed into a prime (2979804589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13932 + ... + 78445.

It is an arithmetic number, because the mean of its divisors is an integer number (744982381).

Almost surely, 2^2979804889 is an apocalyptic number.

It is an amenable number.

2979804889 is a deficient number, since it is larger than the sum of its proper divisors (124635).

2979804889 is an equidigital number, since it uses as much as digits as its factorization.

2979804889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124634.

The product of its (nonzero) digits is 20901888, while the sum is 64.

The square root of 2979804889 is about 54587.5891480838. The cubic root of 2979804889 is about 1439.0060155929.

The spelling of 2979804889 in words is "two billion, nine hundred seventy-nine million, eight hundred four thousand, eight hundred eighty-nine".