397713 has 8 divisors (see below), whose sum is σ = 544768. Its totient is φ = 257904.

The previous prime is 397697. The next prime is 397721. The reversal of 397713 is 317793.

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

It is not a de Polignac number, because 397713 - 2⁴ = 397697 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (397723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1681 + ... + 1902.

It is an arithmetic number, because the mean of its divisors is an integer number (68096).

2³⁹⁷⁷¹³ is an apocalyptic number.

It is an amenable number.

397713 is a deficient number, since it is larger than the sum of its proper divisors (147055).

397713 is a wasteful number, since it uses less digits than its factorization.

397713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3623.

The product of its digits is 3969, while the sum is 30.

The square root of 397713 is about 630.6449080108. The cubic root of 397713 is about 73.5399384960.

The spelling of 397713 in words is "three hundred ninety-seven thousand, seven hundred thirteen".