20365039 has 2 divisors, whose sum is σ = 20365040. Its totient is φ = 20365038.

The previous prime is 20365027. The next prime is 20365043. The reversal of 20365039 is 93056302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20365039 - 2⁹ = 20364527 is a prime.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 20364998 and 20365016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20365019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10182519 + 10182520.

It is an arithmetic number, because the mean of its divisors is an integer number (10182520).

Almost surely, 2^20365039 is an apocalyptic number.

20365039 is a deficient number, since it is larger than the sum of its proper divisors (1).

20365039 is an equidigital number, since it uses as much as digits as its factorization.

20365039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 20365039 is about 4512.7640088974. The cubic root of 20365039 is about 273.0832620932.

The spelling of 20365039 in words is "twenty million, three hundred sixty-five thousand, thirty-nine".