397287 has 12 divisors (see below), whose sum is σ = 626184. Its totient is φ = 240720.

The previous prime is 397283. The next prime is 397289. The reversal of 397287 is 782793.

It is not a de Polignac number, because 397287 - 2² = 397283 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1908 + ... + 2105.

It is an arithmetic number, because the mean of its divisors is an integer number (52182).

2³⁹⁷²⁸⁷ is an apocalyptic number.

397287 is a deficient number, since it is larger than the sum of its proper divisors (228897).

397287 is a wasteful number, since it uses less digits than its factorization.

397287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4030 (or 4027 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 397287 is about 630.3070680232. The cubic root of 397287 is about 73.5136723142.

The spelling of 397287 in words is "three hundred ninety-seven thousand, two hundred eighty-seven".