408478505 has 8 divisors (see below), whose sum is σ = 511486272. Its totient is φ = 312574768.

The previous prime is 408478501. The next prime is 408478519. The reversal of 408478505 is 505874804.

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 408478505 - 2² = 408478501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (408478501) 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 7 ways as a sum of consecutive naturals, for example, 1775879 + ... + 1776108.

It is an arithmetic number, because the mean of its divisors is an integer number (63935784).

Almost surely, 2^408478505 is an apocalyptic number.

It is an amenable number.

408478505 is a deficient number, since it is larger than the sum of its proper divisors (103007767).

408478505 is a wasteful number, since it uses less digits than its factorization.

408478505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3552015.

The product of its (nonzero) digits is 179200, while the sum is 41.

The square root of 408478505 is about 20210.8511696069. The cubic root of 408478505 is about 741.9757919125.

The spelling of 408478505 in words is "four hundred eight million, four hundred seventy-eight thousand, five hundred five".