20067239 has 2 divisors, whose sum is σ = 20067240. Its totient is φ = 20067238.

The previous prime is 20067233. The next prime is 20067241. The reversal of 20067239 is 93276002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20067239 - 2¹⁶ = 20001703 is a prime.

Together with 20067241, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20067233) 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, 10033619 + 10033620.

It is an arithmetic number, because the mean of its divisors is an integer number (10033620).

Almost surely, 2^20067239 is an apocalyptic number.

20067239 is a deficient number, since it is larger than the sum of its proper divisors (1).

20067239 is an equidigital number, since it uses as much as digits as its factorization.

20067239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 20067239 is about 4479.6471959296. The cubic root of 20067239 is about 271.7456126131.

The spelling of 20067239 in words is "twenty million, sixty-seven thousand, two hundred thirty-nine".