410921009 has 2 divisors, whose sum is σ = 410921010. Its totient is φ = 410921008.

The previous prime is 410920973. The next prime is 410921053. The reversal of 410921009 is 900129014.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 271326784 + 139594225 = 16472^2 + 11815^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-410921009 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (410921809) 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, 205460504 + 205460505.

It is an arithmetic number, because the mean of its divisors is an integer number (205460505).

Almost surely, 2^410921009 is an apocalyptic number.

It is an amenable number.

410921009 is a deficient number, since it is larger than the sum of its proper divisors (1).

410921009 is an equidigital number, since it uses as much as digits as its factorization.

410921009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 410921009 is about 20271.1866697537. The cubic root of 410921009 is about 743.4517395128.

The spelling of 410921009 in words is "four hundred ten million, nine hundred twenty-one thousand, nine".