20360839 has 2 divisors, whose sum is σ = 20360840. Its totient is φ = 20360838.

The previous prime is 20360833. The next prime is 20360861. The reversal of 20360839 is 93806302.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20360839 - 2¹⁵ = 20328071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20360839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20360833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10180419 + 10180420.

It is an arithmetic number, because the mean of its divisors is an integer number (10180420).

Almost surely, 2^20360839 is an apocalyptic number.

20360839 is a deficient number, since it is larger than the sum of its proper divisors (1).

20360839 is an equidigital number, since it uses as much as digits as its factorization.

20360839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 20360839 is about 4512.2986381666. The cubic root of 20360839 is about 273.0644876213.

The spelling of 20360839 in words is "twenty million, three hundred sixty thousand, eight hundred thirty-nine".