404320056109 has 2 divisors, whose sum is σ = 404320056110. Its totient is φ = 404320056108.

The previous prime is 404320056089. The next prime is 404320056143. The reversal of 404320056109 is 901650023404.

It is a happy number.

It is an a-pointer prime, because the next prime (404320056143) can be obtained adding 404320056109 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 372767639209 + 31552416900 = 610547^2 + 177630^2 .

It is a cyclic number.

It is not a de Polignac number, because 404320056109 - 2²⁵ = 404286501677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404320056509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202160028054 + 202160028055.

It is an arithmetic number, because the mean of its divisors is an integer number (202160028055).

Almost surely, 2^404320056109 is an apocalyptic number.

It is an amenable number.

404320056109 is a deficient number, since it is larger than the sum of its proper divisors (1).

404320056109 is an equidigital number, since it uses as much as digits as its factorization.

404320056109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 404320056109 in words is "four hundred four billion, three hundred twenty million, fifty-six thousand, one hundred nine".