409648605 has 8 divisors (see below), whose sum is σ = 655437792. Its totient is φ = 218479248.

The previous prime is 409648597. The next prime is 409648619. The reversal of 409648605 is 506846904.

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

It is not a de Polignac number, because 409648605 - 2³ = 409648597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13654939 + ... + 13654968.

It is an arithmetic number, because the mean of its divisors is an integer number (81929724).

Almost surely, 2^409648605 is an apocalyptic number.

It is an amenable number.

409648605 is a deficient number, since it is larger than the sum of its proper divisors (245789187).

409648605 is a wasteful number, since it uses less digits than its factorization.

409648605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27309915.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 409648605 is about 20239.7777902822. Note that the first 4 decimals coincide. The cubic root of 409648605 is about 742.6835877924.

The spelling of 409648605 in words is "four hundred nine million, six hundred forty-eight thousand, six hundred five".