408394555 has 8 divisors (see below), whose sum is σ = 511381152. Its totient is φ = 312510528.

The previous prime is 408394549. The next prime is 408394577. The reversal of 408394555 is 555493804.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 408394555 - 2¹⁵ = 408361787 is a prime.

It is a super-2 number, since 2×408394555² = 333572225107296050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1775514 + ... + 1775743.

It is an arithmetic number, because the mean of its divisors is an integer number (63922644).

Almost surely, 2^408394555 is an apocalyptic number.

408394555 is a deficient number, since it is larger than the sum of its proper divisors (102986597).

408394555 is a wasteful number, since it uses less digits than its factorization.

408394555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3551285.

The product of its (nonzero) digits is 432000, while the sum is 43.

The square root of 408394555 is about 20208.7742082492. The cubic root of 408394555 is about 741.9249584458.

The spelling of 408394555 in words is "four hundred eight million, three hundred ninety-four thousand, five hundred fifty-five".