404332109 has 2 divisors, whose sum is σ = 404332110. Its totient is φ = 404332108.

The previous prime is 404332091. The next prime is 404332127. The reversal of 404332109 is 901233404.

Together with previous prime (404332091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (404332091) and next prime (404332127).

It can be written as a sum of positive squares in only one way, i.e., 399880009 + 4452100 = 19997^2 + 2110^2 .

It is a cyclic number.

It is not a de Polignac number, because 404332109 - 2¹² = 404328013 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404332309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202166054 + 202166055.

It is an arithmetic number, because the mean of its divisors is an integer number (202166055).

Almost surely, 2^404332109 is an apocalyptic number.

It is an amenable number.

404332109 is a deficient number, since it is larger than the sum of its proper divisors (1).

404332109 is an equidigital number, since it uses as much as digits as its factorization.

404332109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 404332109 is about 20108.0110652446. The cubic root of 404332109 is about 739.4566921434.

The spelling of 404332109 in words is "four hundred four million, three hundred thirty-two thousand, one hundred nine".