404217247377109 has 2 divisors, whose sum is σ = 404217247377110. Its totient is φ = 404217247377108.

The previous prime is 404217247377101. The next prime is 404217247377133. The reversal of 404217247377109 is 901773742712404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 294306136554609 + 109911110822500 = 17155353^2 + 10483850^2 .

It is a cyclic number.

It is not a de Polignac number, because 404217247377109 - 2³ = 404217247377101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404217247377101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202108623688554 + 202108623688555.

It is an arithmetic number, because the mean of its divisors is an integer number (202108623688555).

Almost surely, 2^{404217247377109} is an apocalyptic number.

It is an amenable number.

404217247377109 is a deficient number, since it is larger than the sum of its proper divisors (1).

404217247377109 is an equidigital number, since it uses as much as digits as its factorization.

404217247377109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16595712, while the sum is 58.

The spelling of 404217247377109 in words is "four hundred four trillion, two hundred seventeen billion, two hundred forty-seven million, three hundred seventy-seven thousand, one hundred nine".