408400476 has 24 divisors (see below), whose sum is σ = 1039565184. Its totient is φ = 123757680.

The previous prime is 408400463. The next prime is 408400511. The reversal of 408400476 is 674004804.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 1546840 + ... + 1547103.

It is an arithmetic number, because the mean of its divisors is an integer number (43315216).

Almost surely, 2^408400476 is an apocalyptic number.

It is an amenable number.

408400476 is an abundant number, since it is smaller than the sum of its proper divisors (631164708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

408400476 is a wasteful number, since it uses less digits than its factorization.

408400476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3093961 (or 3093959 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 408400476 is about 20208.9207034913. The cubic root of 408400476 is about 741.9285439625.

The spelling of 408400476 in words is "four hundred eight million, four hundred thousand, four hundred seventy-six".