20794471 has 2 divisors, whose sum is σ = 20794472. Its totient is φ = 20794470.

The previous prime is 20794469. The next prime is 20794489. The reversal of 20794471 is 17449702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20794471 - 2¹ = 20794469 is a prime.

It is a super-3 number, since 3×20794471³ (a number of 23 digits) contains 333 as substring.

Together with 20794469, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20794441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10397235 + 10397236.

It is an arithmetic number, because the mean of its divisors is an integer number (10397236).

Almost surely, 2^20794471 is an apocalyptic number.

20794471 is a deficient number, since it is larger than the sum of its proper divisors (1).

20794471 is an equidigital number, since it uses as much as digits as its factorization.

20794471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 20794471 is about 4560.0955033859. The cubic root of 20794471 is about 274.9894034484.

The spelling of 20794471 in words is "twenty million, seven hundred ninety-four thousand, four hundred seventy-one".