397085329 has 3 divisors (see below), whose sum is σ = 397105257. Its totient is φ = 397065402.

The previous prime is 397085323. The next prime is 397085333. The reversal of 397085329 is 923580793.

The square root of 397085329 is 19927.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 397085329 - 2⁹ = 397084817 is a prime.

It is a super-3 number, since 3×397085329³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397085323) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 9964 + ... + 29890.

It is an arithmetic number, because the mean of its divisors is an integer number (132368419).

Almost surely, 2^397085329 is an apocalyptic number.

397085329 is the 19927-th square number.

397085329 is the 9964-th centered octagonal number.

It is an amenable number.

397085329 is a deficient number, since it is larger than the sum of its proper divisors (19928).

397085329 is an frugal number, since it uses more digits than its factorization.

397085329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39854 (or 19927 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 46.

The cubic root of 397085329 is about 735.0123119476.

The spelling of 397085329 in words is "three hundred ninety-seven million, eighty-five thousand, three hundred twenty-nine".