397587 has 4 divisors (see below), whose sum is σ = 530120. Its totient is φ = 265056.

The previous prime is 397567. The next prime is 397589. The reversal of 397587 is 785793.

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

It is not a de Polignac number, because 397587 - 2⁷ = 397459 is a prime.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 397587.

It is not an unprimeable number, because it can be changed into a prime (397589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66262 + ... + 66267.

It is an arithmetic number, because the mean of its divisors is an integer number (132530).

2³⁹⁷⁵⁸⁷ is an apocalyptic number.

397587 is a deficient number, since it is larger than the sum of its proper divisors (132533).

397587 is a wasteful number, since it uses less digits than its factorization.

397587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132532.

The product of its digits is 52920, while the sum is 39.

The square root of 397587 is about 630.5450023591. The cubic root of 397587 is about 73.5321715796.

It can be divided in two parts, 39 and 7587, that added together give a triangular number (7626 = T₁₂₃).

The spelling of 397587 in words is "three hundred ninety-seven thousand, five hundred eighty-seven".