20393039 has 2 divisors, whose sum is σ = 20393040. Its totient is φ = 20393038.

The previous prime is 20393033. The next prime is 20393041. The reversal of 20393039 is 93039302.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20393039 - 2²⁰ = 19344463 is a prime.

It is a Sophie Germain prime.

Together with 20393041, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_1293950 and since 20393039 and 1293950 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20393033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10196519 + 10196520.

It is an arithmetic number, because the mean of its divisors is an integer number (10196520).

Almost surely, 2^20393039 is an apocalyptic number.

20393039 is a deficient number, since it is larger than the sum of its proper divisors (1).

20393039 is an equidigital number, since it uses as much as digits as its factorization.

20393039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 29.

The square root of 20393039 is about 4515.8652548543. The cubic root of 20393039 is about 273.2083593197.

The spelling of 20393039 in words is "twenty million, three hundred ninety-three thousand, thirty-nine".