20943359 has 2 divisors, whose sum is σ = 20943360. Its totient is φ = 20943358.

The previous prime is 20943323. The next prime is 20943361. The reversal of 20943359 is 95334902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20943359 - 2⁸ = 20943103 is a prime.

Together with 20943361, 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 (20943319) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10471679 + 10471680.

It is an arithmetic number, because the mean of its divisors is an integer number (10471680).

Almost surely, 2^20943359 is an apocalyptic number.

20943359 is a deficient number, since it is larger than the sum of its proper divisors (1).

20943359 is an equidigital number, since it uses as much as digits as its factorization.

20943359 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 20943359 is about 4576.3914823800. The cubic root of 20943359 is about 275.6441494949.

The spelling of 20943359 in words is "twenty million, nine hundred forty-three thousand, three hundred fifty-nine".