404044609 has 2 divisors, whose sum is σ = 404044610. Its totient is φ = 404044608.

The previous prime is 404044583. The next prime is 404044649. The reversal of 404044609 is 906440404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 370947600 + 33097009 = 19260^2 + 5753^2 .

It is a cyclic number.

It is not a de Polignac number, because 404044609 - 2⁵ = 404044577 is a prime.

It is not a weakly prime, because it can be changed into another prime (404044649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202022304 + 202022305.

It is an arithmetic number, because the mean of its divisors is an integer number (202022305).

Almost surely, 2^404044609 is an apocalyptic number.

It is an amenable number.

404044609 is a deficient number, since it is larger than the sum of its proper divisors (1).

404044609 is an equidigital number, since it uses as much as digits as its factorization.

404044609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 404044609 is about 20100.8609019614. The cubic root of 404044609 is about 739.2813872374.

The spelling of 404044609 in words is "four hundred four million, forty-four thousand, six hundred nine".