408208406 has 4 divisors (see below), whose sum is σ = 612312612. Its totient is φ = 204104202.

The previous prime is 408208387. The next prime is 408208429. The reversal of 408208406 is 604802804.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102052100 + ... + 102052103.

It is an arithmetic number, because the mean of its divisors is an integer number (153078153).

Almost surely, 2^408208406 is an apocalyptic number.

408208406 is a deficient number, since it is larger than the sum of its proper divisors (204104206).

408208406 is a wasteful number, since it uses less digits than its factorization.

408208406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204104205.

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 408208406 is about 20204.1680353337. The cubic root of 408208406 is about 741.8122165101.

The spelling of 408208406 in words is "four hundred eight million, two hundred eight thousand, four hundred six".