397307 has 4 divisors (see below), whose sum is σ = 420696. Its totient is φ = 373920.

The previous prime is 397303. The next prime is 397337. The reversal of 397307 is 703793.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 397307 - 2² = 397303 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 397307.

It is not an unprimeable number, because it can be changed into a prime (397301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11669 + ... + 11702.

It is an arithmetic number, because the mean of its divisors is an integer number (105174).

2³⁹⁷³⁰⁷ is an apocalyptic number.

397307 is a deficient number, since it is larger than the sum of its proper divisors (23389).

397307 is a wasteful number, since it uses less digits than its factorization.

397307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23388.

The product of its (nonzero) digits is 3969, while the sum is 29.

The square root of 397307 is about 630.3229331065. The cubic root of 397307 is about 73.5149058883.

The spelling of 397307 in words is "three hundred ninety-seven thousand, three hundred seven".