20360449 has 2 divisors, whose sum is σ = 20360450. Its totient is φ = 20360448.

The previous prime is 20360423. The next prime is 20360479. The reversal of 20360449 is 94406302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14010049 + 6350400 = 3743^2 + 2520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20360449 is a prime.

It is not a weakly prime, because it can be changed into another prime (20360479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10180224 + 10180225.

It is an arithmetic number, because the mean of its divisors is an integer number (10180225).

Almost surely, 2^20360449 is an apocalyptic number.

It is an amenable number.

20360449 is a deficient number, since it is larger than the sum of its proper divisors (1).

20360449 is an equidigital number, since it uses as much as digits as its factorization.

20360449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 20360449 is about 4512.2554227348. The cubic root of 20360449 is about 273.0627441465.

The spelling of 20360449 in words is "twenty million, three hundred sixty thousand, four hundred forty-nine".