408478 has 16 divisors (see below), whose sum is σ = 708480. Its totient is φ = 173016.

The previous prime is 408469. The next prime is 408479. The reversal of 408478 is 874804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408479) 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, 2193 + ... + 2371.

It is an arithmetic number, because the mean of its divisors is an integer number (44280).

2⁴⁰⁸⁴⁷⁸ is an apocalyptic number.

408478 is a deficient number, since it is larger than the sum of its proper divisors (300002).

408478 is a wasteful number, since it uses less digits than its factorization.

408478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351.

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 408478 is about 639.1228363938. The cubic root of 408478 is about 74.1975486145.

The spelling of 408478 in words is "four hundred eight thousand, four hundred seventy-eight".