2021079959 has 2 divisors, whose sum is σ = 2021079960. Its totient is φ = 2021079958.

The previous prime is 2021079941. The next prime is 2021079961. The reversal of 2021079959 is 9599701202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2021079959 - 2¹⁶ = 2021014423 is a prime.

Together with 2021079961, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021079259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010539979 + 1010539980.

It is an arithmetic number, because the mean of its divisors is an integer number (1010539980).

Almost surely, 2^2021079959 is an apocalyptic number.

2021079959 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021079959 is an equidigital number, since it uses as much as digits as its factorization.

2021079959 is an evil number, because the sum of its binary digits is even.

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

The square root of 2021079959 is about 44956.4228892825. The cubic root of 2021079959 is about 1264.3321025476.

The spelling of 2021079959 in words is "two billion, twenty-one million, seventy-nine thousand, nine hundred fifty-nine".