20484049 has 2 divisors, whose sum is σ = 20484050. Its totient is φ = 20484048.

The previous prime is 20484017. The next prime is 20484067. The reversal of 20484049 is 94048402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12960000 + 7524049 = 3600^2 + 2743^2 .

It is a cyclic number.

It is not a de Polignac number, because 20484049 - 2⁵ = 20484017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20484049.

It is not a weakly prime, because it can be changed into another prime (20404049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10242024 + 10242025.

It is an arithmetic number, because the mean of its divisors is an integer number (10242025).

Almost surely, 2^20484049 is an apocalyptic number.

It is an amenable number.

20484049 is a deficient number, since it is larger than the sum of its proper divisors (1).

20484049 is an equidigital number, since it uses as much as digits as its factorization.

20484049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 20484049 is about 4525.9307330095. The cubic root of 20484049 is about 273.6141807297.

The spelling of 20484049 in words is "twenty million, four hundred eighty-four thousand, forty-nine".