396248857 has 8 divisors (see below), whose sum is σ = 417401600. Its totient is φ = 375125904.

The previous prime is 396248849. The next prime is 396248917. The reversal of 396248857 is 758842693.

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

It is a cyclic number.

It is not a de Polignac number, because 396248857 - 2³ = 396248849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396248357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23119 + ... + 36427.

It is an arithmetic number, because the mean of its divisors is an integer number (52175200).

Almost surely, 2^396248857 is an apocalyptic number.

It is an amenable number.

396248857 is a deficient number, since it is larger than the sum of its proper divisors (21152743).

396248857 is a wasteful number, since it uses less digits than its factorization.

396248857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14895.

The product of its digits is 2903040, while the sum is 52.

The square root of 396248857 is about 19906.0005274791. Note that the first 3 decimals coincide. The cubic root of 396248857 is about 734.4958407261.

The spelling of 396248857 in words is "three hundred ninety-six million, two hundred forty-eight thousand, eight hundred fifty-seven".