493444789 has 4 divisors (see below), whose sum is σ = 501808320. Its totient is φ = 485081260.

The previous prime is 493444781. The next prime is 493444843. The reversal of 493444789 is 987444394.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 987444394 = 2 ⋅493722197.

It is a cyclic number.

It is not a de Polignac number, because 493444789 - 2³ = 493444781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (493444781) 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, 4181677 + ... + 4181794.

It is an arithmetic number, because the mean of its divisors is an integer number (125452080).

Almost surely, 2^493444789 is an apocalyptic number.

It is an amenable number.

493444789 is a deficient number, since it is larger than the sum of its proper divisors (8363531).

493444789 is an equidigital number, since it uses as much as digits as its factorization.

493444789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8363530.

The product of its digits is 3483648, while the sum is 52.

The square root of 493444789 is about 22213.6171975660. The cubic root of 493444789 is about 790.2166734629.

The spelling of 493444789 in words is "four hundred ninety-three million, four hundred forty-four thousand, seven hundred eighty-nine".