408641217 has 8 divisors (see below), whose sum is σ = 545566560. Its totient is φ = 272071680.

The previous prime is 408641179. The next prime is 408641243. The reversal of 408641217 is 712146804.

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

It is not a de Polignac number, because 408641217 - 2⁶ = 408641153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (408641267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86259 + ... + 90872.

It is an arithmetic number, because the mean of its divisors is an integer number (68195820).

Almost surely, 2^408641217 is an apocalyptic number.

It is an amenable number.

408641217 is a deficient number, since it is larger than the sum of its proper divisors (136925343).

408641217 is a wasteful number, since it uses less digits than its factorization.

408641217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177903.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 408641217 is about 20214.8761312059. The cubic root of 408641217 is about 742.0742975759.

The spelling of 408641217 in words is "four hundred eight million, six hundred forty-one thousand, two hundred seventeen".