394397697 has 8 divisors (see below), whose sum is σ = 527238144. Its totient is φ = 262244528.

The previous prime is 394397683. The next prime is 394397701. The reversal of 394397697 is 796793493.

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 394397697 - 2¹⁴ = 394381313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (394397797) 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, 170478 + ... + 172775.

It is an arithmetic number, because the mean of its divisors is an integer number (65904768).

Almost surely, 2^394397697 is an apocalyptic number.

It is an amenable number.

394397697 is a deficient number, since it is larger than the sum of its proper divisors (132840447).

394397697 is a wasteful number, since it uses less digits than its factorization.

394397697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343639.

The product of its digits is 7715736, while the sum is 57.

The square root of 394397697 is about 19859.4485572989. The cubic root of 394397697 is about 733.3502709357.

The spelling of 394397697 in words is "three hundred ninety-four million, three hundred ninety-seven thousand, six hundred ninety-seven".