493578489 has 8 divisors (see below), whose sum is σ = 658256032. Its totient is φ = 328976640.

The previous prime is 493578473. The next prime is 493578509. The reversal of 493578489 is 984875394.

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

It is not a de Polignac number, because 493578489 - 2⁴ = 493578473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (493578089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1384 + ... + 31449.

It is an arithmetic number, because the mean of its divisors is an integer number (82282004).

Almost surely, 2^493578489 is an apocalyptic number.

It is an amenable number.

493578489 is a deficient number, since it is larger than the sum of its proper divisors (164677543).

493578489 is a wasteful number, since it uses less digits than its factorization.

493578489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37847.

The product of its digits is 8709120, while the sum is 57.

The square root of 493578489 is about 22216.6264090658. The cubic root of 493578489 is about 790.2880373593.

The spelling of 493578489 in words is "four hundred ninety-three million, five hundred seventy-eight thousand, four hundred eighty-nine".