408478285 has 32 divisors (see below), whose sum is σ = 518918400. Its totient is φ = 308313600.

The previous prime is 408478271. The next prime is 408478303. The reversal of 408478285 is 582874804.

It is a happy number.

It is not a de Polignac number, because 408478285 - 2¹³ = 408470093 is a prime.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 1313280 + ... + 1313590.

It is an arithmetic number, because the mean of its divisors is an integer number (16216200).

Almost surely, 2^408478285 is an apocalyptic number.

It is an amenable number.

408478285 is a deficient number, since it is larger than the sum of its proper divisors (110440115).

408478285 is a wasteful number, since it uses less digits than its factorization.

408478285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549.

The product of its (nonzero) digits is 573440, while the sum is 46.

The square root of 408478285 is about 20210.8457269853. The cubic root of 408478285 is about 741.9756587070.

It can be divided in two parts, 4084 and 78285, that added together give a square (82369 = 287²).

The spelling of 408478285 in words is "four hundred eight million, four hundred seventy-eight thousand, two hundred eighty-five".