397243713 has 8 divisors (see below), whose sum is σ = 529776576. Its totient is φ = 264770000.

The previous prime is 397243699. The next prime is 397243733. The reversal of 397243713 is 317342793.

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

It is a cyclic number.

It is not a de Polignac number, because 397243713 - 2¹³ = 397235521 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (397243733) 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, 4468 + ... + 28538.

It is an arithmetic number, because the mean of its divisors is an integer number (66222072).

Almost surely, 2^397243713 is an apocalyptic number.

It is an amenable number.

397243713 is a deficient number, since it is larger than the sum of its proper divisors (132532863).

397243713 is a wasteful number, since it uses less digits than its factorization.

397243713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29575.

The product of its digits is 95256, while the sum is 39.

The square root of 397243713 is about 19930.9737092797. The cubic root of 397243713 is about 735.1100228652.

The spelling of 397243713 in words is "three hundred ninety-seven million, two hundred forty-three thousand, seven hundred thirteen".