2979422021 has 2 divisors, whose sum is σ = 2979422022. Its totient is φ = 2979422020.

The previous prime is 2979421999. The next prime is 2979422081. The reversal of 2979422021 is 1202249792.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2882616100 + 96805921 = 53690^2 + 9839^2 .

It is a cyclic number.

It is not a de Polignac number, because 2979422021 - 2¹⁸ = 2979159877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2979422081) 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 as a sum of consecutive naturals, namely, 1489711010 + 1489711011.

It is an arithmetic number, because the mean of its divisors is an integer number (1489711011).

Almost surely, 2^2979422021 is an apocalyptic number.

It is an amenable number.

2979422021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2979422021 is an equidigital number, since it uses as much as digits as its factorization.

2979422021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 2979422021 is about 54584.0821210726. The cubic root of 2979422021 is about 1438.9443814732.

It can be divided in two parts, 29794 and 22021, that added together give a palindrome (51815).

The spelling of 2979422021 in words is "two billion, nine hundred seventy-nine million, four hundred twenty-two thousand, twenty-one".