397797 has 8 divisors (see below), whose sum is σ = 536256. Its totient is φ = 262272.

The previous prime is 397763. The next prime is 397799. The reversal of 397797 is 797793.

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

It is not a de Polignac number, because 397797 - 2⁸ = 397541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397799) 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, 393 + ... + 974.

It is an arithmetic number, because the mean of its divisors is an integer number (67032).

2³⁹⁷⁷⁹⁷ is an apocalyptic number.

It is an amenable number.

397797 is a deficient number, since it is larger than the sum of its proper divisors (138459).

397797 is a wasteful number, since it uses less digits than its factorization.

397797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467.

The product of its digits is 83349, while the sum is 42.

The square root of 397797 is about 630.7115029869. The cubic root of 397797 is about 73.5451155290.

The spelling of 397797 in words is "three hundred ninety-seven thousand, seven hundred ninety-seven".