394868493 has 16 divisors (see below), whose sum is σ = 586328640. Its totient is φ = 262643472.

The previous prime is 394868491. The next prime is 394868501.

It is a happy number.

394868493 is a `hidden beast` number, since 3 + 94 + 8 + 68 + 493 = 666.

394868493 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 394868493 - 2¹ = 394868491 is a prime.

It is a super-2 number, since 2×394868493² = 311842253528182098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394868491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4546 + ... + 28467.

It is an arithmetic number, because the mean of its divisors is an integer number (36645540).

Almost surely, 2^394868493 is an apocalyptic number.

It is an amenable number.

394868493 is a deficient number, since it is larger than the sum of its proper divisors (191460147).

394868493 is a wasteful number, since it uses less digits than its factorization.

394868493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33465 (or 33459 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The square root of 394868493 is about 19871.2982213040. The cubic root of 394868493 is about 733.6419571266.

The spelling of 394868493 in words is "three hundred ninety-four million, eight hundred sixty-eight thousand, four hundred ninety-three".