20789411 has 2 divisors, whose sum is σ = 20789412. Its totient is φ = 20789410.

The previous prime is 20789407. The next prime is 20789413. The reversal of 20789411 is 11498702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20789411 - 2² = 20789407 is a prime.

Together with 20789413, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20789413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10394705 + 10394706.

It is an arithmetic number, because the mean of its divisors is an integer number (10394706).

Almost surely, 2^20789411 is an apocalyptic number.

20789411 is a deficient number, since it is larger than the sum of its proper divisors (1).

20789411 is an equidigital number, since it uses as much as digits as its factorization.

20789411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 20789411 is about 4559.5406566890. The cubic root of 20789411 is about 274.9670968898.

The spelling of 20789411 in words is "twenty million, seven hundred eighty-nine thousand, four hundred eleven".