20796929 has 2 divisors, whose sum is σ = 20796930. Its totient is φ = 20796928.

The previous prime is 20796917. The next prime is 20796943. The reversal of 20796929 is 92969702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17205904 + 3591025 = 4148^2 + 1895^2 .

It is a cyclic number.

It is not a de Polignac number, because 20796929 - 2²⁴ = 4019713 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20796929.

It is not a weakly prime, because it can be changed into another prime (20796959) 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, 10398464 + 10398465.

It is an arithmetic number, because the mean of its divisors is an integer number (10398465).

Almost surely, 2^20796929 is an apocalyptic number.

It is an amenable number.

20796929 is a deficient number, since it is larger than the sum of its proper divisors (1).

20796929 is an equidigital number, since it uses as much as digits as its factorization.

20796929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 20796929 is about 4560.3650073212. The cubic root of 20796929 is about 275.0002380163. Note that the first 3 decimals are identical.

The spelling of 20796929 in words is "twenty million, seven hundred ninety-six thousand, nine hundred twenty-nine".