20963339 has 2 divisors, whose sum is σ = 20963340. Its totient is φ = 20963338.

The previous prime is 20963287. The next prime is 20963353. The reversal of 20963339 is 93336902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20963339 - 2²⁴ = 4186123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20963299 and 20963308.

It is not a weakly prime, because it can be changed into another prime (20963359) 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, 10481669 + 10481670.

It is an arithmetic number, because the mean of its divisors is an integer number (10481670).

Almost surely, 2^20963339 is an apocalyptic number.

20963339 is a deficient number, since it is larger than the sum of its proper divisors (1).

20963339 is an equidigital number, since it uses as much as digits as its factorization.

20963339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26244, while the sum is 35.

The square root of 20963339 is about 4578.5739046127. The cubic root of 20963339 is about 275.7317766307.

The spelling of 20963339 in words is "twenty million, nine hundred sixty-three thousand, three hundred thirty-nine".