397481 has 4 divisors (see below), whose sum is σ = 454272. Its totient is φ = 340692.

The previous prime is 397469. The next prime is 397489. The reversal of 397481 is 184793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 184793 = 7 ⋅26399.

It is a cyclic number.

It is not a de Polignac number, because 397481 - 2¹⁴ = 381097 is a prime.

It is a super-2 number, since 2×397481² = 315982290722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (397489) 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, 28385 + ... + 28398.

It is an arithmetic number, because the mean of its divisors is an integer number (113568).

2³⁹⁷⁴⁸¹ is an apocalyptic number.

It is an amenable number.

397481 is a deficient number, since it is larger than the sum of its proper divisors (56791).

397481 is an equidigital number, since it uses as much as digits as its factorization.

397481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56790.

The product of its digits is 6048, while the sum is 32.

The square root of 397481 is about 630.4609424857. The cubic root of 397481 is about 73.5256362359.

It can be divided in two parts, 397 and 481, that added together give a palindrome (878).

The spelling of 397481 in words is "three hundred ninety-seven thousand, four hundred eighty-one".