493978404 has 48 divisors (see below), whose sum is σ = 1173229568. Its totient is φ = 161729568.

The previous prime is 493978403. The next prime is 493978409. The reversal of 493978404 is 404879394.

It is not an unprimeable number, because it can be changed into a prime (493978403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 371589 + ... + 372915.

Almost surely, 2^493978404 is an apocalyptic number.

It is an amenable number.

493978404 is an abundant number, since it is smaller than the sum of its proper divisors (679251164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

493978404 is a wasteful number, since it uses less digits than its factorization.

493978404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864 (or 1862 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 493978404 is about 22225.6249405950. The cubic root of 493978404 is about 790.5014196467.

The spelling of 493978404 in words is "four hundred ninety-three million, nine hundred seventy-eight thousand, four hundred four".