404596109 has 2 divisors, whose sum is σ = 404596110. Its totient is φ = 404596108.

The previous prime is 404596091. The next prime is 404596111. The reversal of 404596109 is 901695404.

Together with previous prime (404596091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 377524900 + 27071209 = 19430^2 + 5203^2 .

It is a cyclic number.

It is not a de Polignac number, because 404596109 - 2¹⁶ = 404530573 is a prime.

It is a super-2 number, since 2×404596109² = 327396022835879762, which contains 22 as substring.

Together with 404596111, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_21568178 and since 404596109 and 21568178 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404596609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202298054 + 202298055.

It is an arithmetic number, because the mean of its divisors is an integer number (202298055).

Almost surely, 2^404596109 is an apocalyptic number.

It is an amenable number.

404596109 is a deficient number, since it is larger than the sum of its proper divisors (1).

404596109 is an equidigital number, since it uses as much as digits as its factorization.

404596109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 404596109 is about 20114.5745418589. The cubic root of 404596109 is about 739.6175946048.

The spelling of 404596109 in words is "four hundred four million, five hundred ninety-six thousand, one hundred nine".