404664445109 has 2 divisors, whose sum is σ = 404664445110. Its totient is φ = 404664445108.

The previous prime is 404664445069. The next prime is 404664445127. The reversal of 404664445109 is 901544466404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 278173966084 + 126490479025 = 527422^2 + 355655^2 .

It is a cyclic number.

It is not a de Polignac number, because 404664445109 - 2⁸ = 404664444853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404664445609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202332222554 + 202332222555.

It is an arithmetic number, because the mean of its divisors is an integer number (202332222555).

Almost surely, 2^404664445109 is an apocalyptic number.

It is an amenable number.

404664445109 is a deficient number, since it is larger than the sum of its proper divisors (1).

404664445109 is an equidigital number, since it uses as much as digits as its factorization.

404664445109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1658880, while the sum is 47.

The spelling of 404664445109 in words is "four hundred four billion, six hundred sixty-four million, four hundred forty-five thousand, one hundred nine".