397324318917 has 4 divisors (see below), whose sum is σ = 529765758560. Its totient is φ = 264882879276.

The previous prime is 397324318879. The next prime is 397324318943. The reversal of 397324318917 is 719813423793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 397324318917 - 2⁷ = 397324318789 is a prime.

It is a super-2 number, since 2×397324318917² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397324318987) 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, 66220719817 + ... + 66220719822.

It is an arithmetic number, because the mean of its divisors is an integer number (132441439640).

Almost surely, 2^397324318917 is an apocalyptic number.

It is an amenable number.

397324318917 is a deficient number, since it is larger than the sum of its proper divisors (132441439643).

397324318917 is a wasteful number, since it uses less digits than its factorization.

397324318917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132441439642.

The product of its digits is 6858432, while the sum is 57.

The spelling of 397324318917 in words is "three hundred ninety-seven billion, three hundred twenty-four million, three hundred eighteen thousand, nine hundred seventeen".