397241 has 4 divisors (see below), whose sum is σ = 427812. Its totient is φ = 366672.

The previous prime is 397237. The next prime is 397253. The reversal of 397241 is 142793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 142793 = 7 ⋅20399.

It can be written as a sum of positive squares in 2 ways, for example, as 42025 + 355216 = 205^2 + 596^2 .

It is a cyclic number.

It is not a de Polignac number, because 397241 - 2² = 397237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 397241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397211) 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, 15266 + ... + 15291.

It is an arithmetic number, because the mean of its divisors is an integer number (106953).

2³⁹⁷²⁴¹ is an apocalyptic number.

It is an amenable number.

397241 is a deficient number, since it is larger than the sum of its proper divisors (30571).

397241 is a wasteful number, since it uses less digits than its factorization.

397241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30570.

The product of its digits is 1512, while the sum is 26.

The square root of 397241 is about 630.2705768160. The cubic root of 397241 is about 73.5108349369.

The spelling of 397241 in words is "three hundred ninety-seven thousand, two hundred forty-one".