394666493 has 8 divisors (see below), whose sum is σ = 431012736. Its totient is φ = 359175600.

The previous prime is 394666469. The next prime is 394666501.

It is a happy number.

394666493 is nontrivially palindromic in base 10.

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 394666493 - 2²⁸ = 126231037 is a prime.

It is a super-3 number, since 3×394666493³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394666403) 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, 212873 + ... + 214718.

It is an arithmetic number, because the mean of its divisors is an integer number (53876592).

Almost surely, 2^394666493 is an apocalyptic number.

It is an amenable number.

394666493 is a deficient number, since it is larger than the sum of its proper divisors (36346243).

394666493 is a wasteful number, since it uses less digits than its factorization.

394666493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427675.

The product of its digits is 2519424, while the sum is 50.

The square root of 394666493 is about 19866.2148634308. The cubic root of 394666493 is about 733.5168344967.

The spelling of 394666493 in words is "three hundred ninety-four million, six hundred sixty-six thousand, four hundred ninety-three".