394684486493 has 16 divisors (see below), whose sum is σ = 434928130560. Its totient is φ = 355169688000.

The previous prime is 394684486489. The next prime is 394684486501.

394684486493 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 394684486493 - 2² = 394684486489 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394684486193) 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, 5068628 + ... + 5145906.

It is an arithmetic number, because the mean of its divisors is an integer number (27183008160).

Almost surely, 2^394684486493 is an apocalyptic number.

It is an amenable number.

394684486493 is a deficient number, since it is larger than the sum of its proper divisors (40243644067).

394684486493 is a wasteful number, since it uses less digits than its factorization.

394684486493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81988.

The product of its digits is 429981696, while the sum is 68.

The spelling of 394684486493 in words is "three hundred ninety-four billion, six hundred eighty-four million, four hundred eighty-six thousand, four hundred ninety-three".