405323409 has 16 divisors (see below), whose sum is σ = 569811200. Its totient is φ = 255572496.

The previous prime is 405323393. The next prime is 405323423. The reversal of 405323409 is 904323504.

It is not a de Polignac number, because 405323409 - 2⁴ = 405323393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405323509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31122 + ... + 42180.

It is an arithmetic number, because the mean of its divisors is an integer number (35613200).

Almost surely, 2^405323409 is an apocalyptic number.

It is an amenable number.

405323409 is a deficient number, since it is larger than the sum of its proper divisors (164487791).

405323409 is a wasteful number, since it uses less digits than its factorization.

405323409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11724.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 405323409 is about 20132.6453552433. The cubic root of 405323409 is about 740.0605069833.

The spelling of 405323409 in words is "four hundred five million, three hundred twenty-three thousand, four hundred nine".