408480809 has 4 divisors (see below), whose sum is σ = 445615440. Its totient is φ = 371346180.

The previous prime is 408480749. The next prime is 408480841. The reversal of 408480809 is 908084804.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 408480809 - 2¹² = 408476713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (408480869) 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 3 ways as a sum of consecutive naturals, for example, 18567299 + ... + 18567320.

It is an arithmetic number, because the mean of its divisors is an integer number (111403860).

Almost surely, 2^408480809 is an apocalyptic number.

It is an amenable number.

408480809 is a deficient number, since it is larger than the sum of its proper divisors (37134631).

408480809 is a wasteful number, since it uses less digits than its factorization.

408480809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37134630.

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 408480809 is about 20210.9081686103. The cubic root of 408480809 is about 741.9771869341.

The spelling of 408480809 in words is "four hundred eight million, four hundred eighty thousand, eight hundred nine".