420586709 has 2 divisors, whose sum is σ = 420586710. Its totient is φ = 420586708.

The previous prime is 420586687. The next prime is 420586711. The reversal of 420586709 is 907685024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 276058225 + 144528484 = 16615^2 + 12022^2 .

It is a cyclic number.

It is not a de Polignac number, because 420586709 - 2²⁴ = 403809493 is a prime.

Together with 420586711, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420586729) 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, 210293354 + 210293355.

It is an arithmetic number, because the mean of its divisors is an integer number (210293355).

Almost surely, 2^420586709 is an apocalyptic number.

It is an amenable number.

420586709 is a deficient number, since it is larger than the sum of its proper divisors (1).

420586709 is an equidigital number, since it uses as much as digits as its factorization.

420586709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 420586709 is about 20508.2107703232. The cubic root of 420586709 is about 749.2357898713.

The spelling of 420586709 in words is "four hundred twenty million, five hundred eighty-six thousand, seven hundred nine".