20084929 has 2 divisors, whose sum is σ = 20084930. Its totient is φ = 20084928.

The previous prime is 20084927. The next prime is 20084947. The reversal of 20084929 is 92948002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12794929 + 7290000 = 3577^2 + 2700^2 .

It is a cyclic number.

It is not a de Polignac number, because 20084929 - 2¹ = 20084927 is a prime.

Together with 20084927, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 20084894 and 20084903.

It is not a weakly prime, because it can be changed into another prime (20084927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10042464 + 10042465.

It is an arithmetic number, because the mean of its divisors is an integer number (10042465).

Almost surely, 2^20084929 is an apocalyptic number.

It is an amenable number.

20084929 is a deficient number, since it is larger than the sum of its proper divisors (1).

20084929 is an equidigital number, since it uses as much as digits as its factorization.

20084929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 20084929 is about 4481.6212468258. The cubic root of 20084929 is about 271.8254403697.

The spelling of 20084929 in words is "twenty million, eighty-four thousand, nine hundred twenty-nine".