493978938 has 8 divisors (see below), whose sum is σ = 987957888. Its totient is φ = 164659644.

The previous prime is 493978913. The next prime is 493978939. The reversal of 493978938 is 839879394.

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

493978938 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (493978939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41164906 + ... + 41164917.

It is an arithmetic number, because the mean of its divisors is an integer number (123494736).

Almost surely, 2^493978938 is an apocalyptic number.

493978938 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

493978938 is a wasteful number, since it uses less digits than its factorization.

493978938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82329828.

The product of its digits is 11757312, while the sum is 60.

The square root of 493978938 is about 22225.6369537523. The cubic root of 493978938 is about 790.5017044956.

The spelling of 493978938 in words is "four hundred ninety-three million, nine hundred seventy-eight thousand, nine hundred thirty-eight".