20434411 has 2 divisors, whose sum is σ = 20434412. Its totient is φ = 20434410.

The previous prime is 20434409. The next prime is 20434457. The reversal of 20434411 is 11443402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20434411 - 2¹ = 20434409 is a prime.

Together with 20434409, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20434811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10217205 + 10217206.

It is an arithmetic number, because the mean of its divisors is an integer number (10217206).

Almost surely, 2^20434411 is an apocalyptic number.

20434411 is a deficient number, since it is larger than the sum of its proper divisors (1).

20434411 is an equidigital number, since it uses as much as digits as its factorization.

20434411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 20434411 is about 4520.4436729153. The cubic root of 20434411 is about 273.3929899861.

Adding to 20434411 its reverse (11443402), we get a palindrome (31877813).

The spelling of 20434411 in words is "twenty million, four hundred thirty-four thousand, four hundred eleven".