20414789 has 2 divisors, whose sum is σ = 20414790. Its totient is φ = 20414788.

The previous prime is 20414741. The next prime is 20414803. The reversal of 20414789 is 98741402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20205025 + 209764 = 4495^2 + 458^2 .

It is a cyclic number.

It is not a de Polignac number, because 20414789 - 2⁸ = 20414533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20414729) 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, 10207394 + 10207395.

It is an arithmetic number, because the mean of its divisors is an integer number (10207395).

Almost surely, 2^20414789 is an apocalyptic number.

It is an amenable number.

20414789 is a deficient number, since it is larger than the sum of its proper divisors (1).

20414789 is an equidigital number, since it uses as much as digits as its factorization.

20414789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 20414789 is about 4518.2727894628. The cubic root of 20414789 is about 273.3054540604.

The spelling of 20414789 in words is "twenty million, four hundred fourteen thousand, seven hundred eighty-nine".