396257418 has 12 divisors (see below), whose sum is σ = 858557778. Its totient is φ = 132085800.

The previous prime is 396257417. The next prime is 396257429. The reversal of 396257418 is 814752693.

396257418 is a `hidden beast` number, since 3 + 9 + 62 + 574 + 18 = 666.

It can be written as a sum of positive squares in only one way, i.e., 381303729 + 14953689 = 19527^2 + 3867^2 .

It is not an unprimeable number, because it can be changed into a prime (396257417) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11007133 + ... + 11007168.

Almost surely, 2^396257418 is an apocalyptic number.

396257418 is an abundant number, since it is smaller than the sum of its proper divisors (462300360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

396257418 is a wasteful number, since it uses less digits than its factorization.

396257418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22014309 (or 22014306 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 396257418 is about 19906.2155619796. The cubic root of 396257418 is about 734.5011303091.

The spelling of 396257418 in words is "three hundred ninety-six million, two hundred fifty-seven thousand, four hundred eighteen".