493666394 has 8 divisors (see below), whose sum is σ = 797461140. Its totient is φ = 227846016.

The previous prime is 493666373. The next prime is 493666403.

It is a happy number.

493666394 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 427455625 + 66210769 = 20675^2 + 8137^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9493559 + ... + 9493610.

Almost surely, 2^493666394 is an apocalyptic number.

493666394 is a deficient number, since it is larger than the sum of its proper divisors (303794746).

493666394 is a wasteful number, since it uses less digits than its factorization.

493666394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18987184.

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

The square root of 493666394 is about 22218.6046816626. The cubic root of 493666394 is about 790.3349506316.

The spelling of 493666394 in words is "four hundred ninety-three million, six hundred sixty-six thousand, three hundred ninety-four".