493620289 has 4 divisors (see below), whose sum is σ = 500987824. Its totient is φ = 486252756.

The previous prime is 493620287. The next prime is 493620299. The reversal of 493620289 is 982026394.

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.

It is a cyclic number.

It is not a de Polignac number, because 493620289 - 2¹ = 493620287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (493620287) 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, 3683667 + ... + 3683800.

It is an arithmetic number, because the mean of its divisors is an integer number (125246956).

Almost surely, 2^493620289 is an apocalyptic number.

It is an amenable number.

493620289 is a deficient number, since it is larger than the sum of its proper divisors (7367535).

493620289 is an equidigital number, since it uses as much as digits as its factorization.

493620289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7367534.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 493620289 is about 22217.5671260379. The cubic root of 493620289 is about 790.3103459406.

The spelling of 493620289 in words is "four hundred ninety-three million, six hundred twenty thousand, two hundred eighty-nine".