396442618 has 64 divisors (see below), whose sum is σ = 751379328. Its totient is φ = 154091520.

The previous prime is 396442609. The next prime is 396442637. The reversal of 396442618 is 816244693.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 325146 + ... + 326362.

It is an arithmetic number, because the mean of its divisors is an integer number (11740302).

Almost surely, 2^396442618 is an apocalyptic number.

396442618 is a deficient number, since it is larger than the sum of its proper divisors (354936710).

396442618 is a wasteful number, since it uses less digits than its factorization.

396442618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327.

The product of its digits is 248832, while the sum is 43.

The square root of 396442618 is about 19910.8668319589. The cubic root of 396442618 is about 734.6155411411.

The spelling of 396442618 in words is "three hundred ninety-six million, four hundred forty-two thousand, six hundred eighteen".