493118987 has 4 divisors (see below), whose sum is σ = 510123120. Its totient is φ = 476114856.

The previous prime is 493118981. The next prime is 493119031. The reversal of 493118987 is 789811394.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 493118987 - 2²⁴ = 476341771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (493118981) 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, 8502023 + ... + 8502080.

It is an arithmetic number, because the mean of its divisors is an integer number (127530780).

Almost surely, 2^493118987 is an apocalyptic number.

493118987 is a deficient number, since it is larger than the sum of its proper divisors (17004133).

493118987 is a wasteful number, since it uses less digits than its factorization.

493118987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17004132.

The product of its digits is 435456, while the sum is 50.

The square root of 493118987 is about 22206.2826020025. The cubic root of 493118987 is about 790.0427189419.

The spelling of 493118987 in words is "four hundred ninety-three million, one hundred eighteen thousand, nine hundred eighty-seven".