20794469 has 2 divisors, whose sum is σ = 20794470. Its totient is φ = 20794468.

The previous prime is 20794447. The next prime is 20794471. The reversal of 20794469 is 96449702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16120225 + 4674244 = 4015^2 + 2162^2 .

It is a cyclic number.

It is not a de Polignac number, because 20794469 - 2²⁰ = 19745893 is a prime.

It is a super-2 number, since 2×20794469² = 864819881983922, which contains 22 as substring.

Together with 20794471, 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 (20794489) 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, 10397234 + 10397235.

It is an arithmetic number, because the mean of its divisors is an integer number (10397235).

Almost surely, 2^20794469 is an apocalyptic number.

It is an amenable number.

20794469 is a deficient number, since it is larger than the sum of its proper divisors (1).

20794469 is an equidigital number, since it uses as much as digits as its factorization.

20794469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 20794469 is about 4560.0952840922. The cubic root of 20794469 is about 274.9893946323.

The spelling of 20794469 in words is "twenty million, seven hundred ninety-four thousand, four hundred sixty-nine".