400618 has 8 divisors (see below), whose sum is σ = 603648. Its totient is φ = 199404.

The previous prime is 400607. The next prime is 400619. The reversal of 400618 is 816004.

400618 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 = 400595 and 400604.

It is not an unprimeable number, because it can be changed into a prime (400619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505 + ... + 1027.

It is an arithmetic number, because the mean of its divisors is an integer number (75456).

2⁴⁰⁰⁶¹⁸ is an apocalyptic number.

400618 is a deficient number, since it is larger than the sum of its proper divisors (203030).

400618 is a wasteful number, since it uses less digits than its factorization.

400618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 400618 is about 632.9439153669. The cubic root of 400618 is about 73.7185559721.

The spelling of 400618 in words is "four hundred thousand, six hundred eighteen".