408418 has 8 divisors (see below), whose sum is σ = 624348. Its totient is φ = 200304.

The previous prime is 408413. The next prime is 408427. The reversal of 408418 is 814804.

It can be written as a sum of positive squares in 2 ways, for example, as 328329 + 80089 = 573^2 + 283^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 408392 and 408401.

It is not an unprimeable number, because it can be changed into a prime (408413) by changing a digit.

408418 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1821 + ... + 2032.

2⁴⁰⁸⁴¹⁸ is an apocalyptic number.

408418 is a deficient number, since it is larger than the sum of its proper divisors (215930).

408418 is a wasteful number, since it uses less digits than its factorization.

408418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3908.

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 408418 is about 639.0758953364. The cubic root of 408418 is about 74.1939155581.

The spelling of 408418 in words is "four hundred eight thousand, four hundred eighteen".