404618 has 4 divisors (see below), whose sum is σ = 606930. Its totient is φ = 202308.

The previous prime is 404597. The next prime is 404671. The reversal of 404618 is 816404.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 247009 + 157609 = 497^2 + 397^2 .

It is a plaindrome in base 13.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 404593 and 404602.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101153 + ... + 101156.

2⁴⁰⁴⁶¹⁸ is an apocalyptic number.

404618 is a deficient number, since it is larger than the sum of its proper divisors (202312).

404618 is a wasteful number, since it uses less digits than its factorization.

404618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202311.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 404618 is about 636.0959047188. The cubic root of 404618 is about 73.9630933567.

The spelling of 404618 in words is "four hundred four thousand, six hundred eighteen".