396503 has 4 divisors (see below), whose sum is σ = 405768. Its totient is φ = 387240.

The previous prime is 396479. The next prime is 396509. The reversal of 396503 is 305693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 305693 = 23 ⋅13291.

It is a cyclic number.

It is not a de Polignac number, because 396503 - 2⁸ = 396247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396509) 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, 4568 + ... + 4653.

It is an arithmetic number, because the mean of its divisors is an integer number (101442).

2³⁹⁶⁵⁰³ is an apocalyptic number.

396503 is a deficient number, since it is larger than the sum of its proper divisors (9265).

396503 is an equidigital number, since it uses as much as digits as its factorization.

396503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9264.

The product of its (nonzero) digits is 2430, while the sum is 26.

The square root of 396503 is about 629.6848418058. The cubic root of 396503 is about 73.4652835571.

The spelling of 396503 in words is "three hundred ninety-six thousand, five hundred three".