397451 has 4 divisors (see below), whose sum is σ = 410304. Its totient is φ = 384600.

The previous prime is 397433. The next prime is 397459. The reversal of 397451 is 154793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154793 = 19 ⋅8147.

It is a cyclic number.

It is not a de Polignac number, because 397451 - 2¹⁰ = 396427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397459) 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, 6380 + ... + 6441.

It is an arithmetic number, because the mean of its divisors is an integer number (102576).

2³⁹⁷⁴⁵¹ is an apocalyptic number.

397451 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

397451 is a deficient number, since it is larger than the sum of its proper divisors (12853).

397451 is a wasteful number, since it uses less digits than its factorization.

397451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12852.

The product of its digits is 3780, while the sum is 29.

The square root of 397451 is about 630.4371499206. The cubic root of 397451 is about 73.5237863994.

It can be divided in two parts, 397 and 451, that added together give a palindrome (848).

The spelling of 397451 in words is "three hundred ninety-seven thousand, four hundred fifty-one".