397087 has 4 divisors (see below), whose sum is σ = 400840. Its totient is φ = 393336.

The previous prime is 397073. The next prime is 397093. The reversal of 397087 is 780793.

397087 is nontrivially palindromic in base 15.

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 397087 - 2¹¹ = 395039 is a prime.

It is a Duffinian number.

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 (397027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1713 + ... + 1930.

It is an arithmetic number, because the mean of its divisors is an integer number (100210).

2³⁹⁷⁰⁸⁷ is an apocalyptic number.

397087 is a deficient number, since it is larger than the sum of its proper divisors (3753).

397087 is a wasteful number, since it uses less digits than its factorization.

397087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3752.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 397087 is about 630.1483952213. The cubic root of 397087 is about 73.5013342964.

The spelling of 397087 in words is "three hundred ninety-seven thousand, eighty-seven".