20299339 has 2 divisors, whose sum is σ = 20299340. Its totient is φ = 20299338.

The previous prime is 20299337. The next prime is 20299361. The reversal of 20299339 is 93399202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20299339 - 2¹ = 20299337 is a prime.

Together with 20299337, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20299298 and 20299307.

It is not a weakly prime, because it can be changed into another prime (20299337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10149669 + 10149670.

It is an arithmetic number, because the mean of its divisors is an integer number (10149670).

Almost surely, 2^20299339 is an apocalyptic number.

20299339 is a deficient number, since it is larger than the sum of its proper divisors (1).

20299339 is an equidigital number, since it uses as much as digits as its factorization.

20299339 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 37.

The square root of 20299339 is about 4505.4787758905. The cubic root of 20299339 is about 272.7892795342.

The spelling of 20299339 in words is "twenty million, two hundred ninety-nine thousand, three hundred thirty-nine".