20004023239 has 2 divisors, whose sum is σ = 20004023240. Its totient is φ = 20004023238.

The previous prime is 20004023183. The next prime is 20004023311. The reversal of 20004023239 is 93232040002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20004023239 - 2¹³ = 20004015047 is a prime.

It is a super-2 number, since 2×20004023239² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20004023939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10002011619 + 10002011620.

It is an arithmetic number, because the mean of its divisors is an integer number (10002011620).

Almost surely, 2^20004023239 is an apocalyptic number.

20004023239 is a deficient number, since it is larger than the sum of its proper divisors (1).

20004023239 is an equidigital number, since it uses as much as digits as its factorization.

20004023239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

The spelling of 20004023239 in words is "twenty billion, four million, twenty-three thousand, two hundred thirty-nine".