397903 has 8 divisors (see below), whose sum is σ = 441936. Its totient is φ = 355200.

The previous prime is 397897. The next prime is 397907. The reversal of 397903 is 309793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375 + ... + 967.

It is an arithmetic number, because the mean of its divisors is an integer number (55242).

2³⁹⁷⁹⁰³ is an apocalyptic number.

397903 is a deficient number, since it is larger than the sum of its proper divisors (44033).

397903 is a wasteful number, since it uses less digits than its factorization.

397903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665.

The product of its (nonzero) digits is 5103, while the sum is 31.

The square root of 397903 is about 630.7955294705. The cubic root of 397903 is about 73.5516474116.

It can be divided in two parts, 39790 and 3, that added together give a palindrome (39793).

The spelling of 397903 in words is "three hundred ninety-seven thousand, nine hundred three".