396170447 has 4 divisors (see below), whose sum is σ = 398359416. Its totient is φ = 393981480.

The previous prime is 396170443. The next prime is 396170449. The reversal of 396170447 is 744071693.

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

It is a cyclic number.

It is not a de Polignac number, because 396170447 - 2² = 396170443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396170443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1094213 + ... + 1094574.

It is an arithmetic number, because the mean of its divisors is an integer number (99589854).

Almost surely, 2^396170447 is an apocalyptic number.

396170447 is a deficient number, since it is larger than the sum of its proper divisors (2188969).

396170447 is a wasteful number, since it uses less digits than its factorization.

396170447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188968.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 396170447 is about 19904.0309234085. The cubic root of 396170447 is about 734.4473900139.

The spelling of 396170447 in words is "three hundred ninety-six million, one hundred seventy thousand, four hundred forty-seven".