409630865 has 8 divisors (see below), whose sum is σ = 561779520. Its totient is φ = 280889712.

The previous prime is 409630853. The next prime is 409630889. The reversal of 409630865 is 568036904.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 409630865 - 2⁶ = 409630801 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5851835 + ... + 5851904.

It is an arithmetic number, because the mean of its divisors is an integer number (70222440).

Almost surely, 2^409630865 is an apocalyptic number.

It is an amenable number.

409630865 is a deficient number, since it is larger than the sum of its proper divisors (152148655).

409630865 is a wasteful number, since it uses less digits than its factorization.

409630865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11703751.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 409630865 is about 20239.3395396194. The cubic root of 409630865 is about 742.6728668990.

The spelling of 409630865 in words is "four hundred nine million, six hundred thirty thousand, eight hundred sixty-five".