2059979021 has 2 divisors, whose sum is σ = 2059979022. Its totient is φ = 2059979020.

The previous prime is 2059979017. The next prime is 2059979099. The reversal of 2059979021 is 1209799502.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2025990121 + 33988900 = 45011^2 + 5830^2 .

It is a cyclic number.

It is not a de Polignac number, because 2059979021 - 2² = 2059979017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2059979321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1029989510 + 1029989511.

It is an arithmetic number, because the mean of its divisors is an integer number (1029989511).

Almost surely, 2^2059979021 is an apocalyptic number.

It is an amenable number.

2059979021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2059979021 is an equidigital number, since it uses as much as digits as its factorization.

2059979021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102060, while the sum is 44.

The square root of 2059979021 is about 45386.9917597542. The cubic root of 2059979021 is about 1272.3920076949.

The spelling of 2059979021 in words is "two billion, fifty-nine million, nine hundred seventy-nine thousand, twenty-one".