397403 has 4 divisors (see below), whose sum is σ = 399600. Its totient is φ = 395208.

The previous prime is 397379. The next prime is 397427. The reversal of 397403 is 304793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304793 = 17 ⋅17929.

It is an interprime number because it is at equal distance from previous prime (397379) and next prime (397427).

It is a cyclic number.

It is not a de Polignac number, because 397403 - 2¹⁰ = 396379 is a prime.

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 397403.

It is not an unprimeable number, because it can be changed into a prime (397433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 800 + ... + 1197.

It is an arithmetic number, because the mean of its divisors is an integer number (99900).

2³⁹⁷⁴⁰³ is an apocalyptic number.

397403 is a deficient number, since it is larger than the sum of its proper divisors (2197).

397403 is a wasteful number, since it uses less digits than its factorization.

397403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2196.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 397403 is about 630.3990799486. The cubic root of 397403 is about 73.5208264674.

The spelling of 397403 in words is "three hundred ninety-seven thousand, four hundred three".