494742289 has 8 divisors (see below), whose sum is σ = 498718080. Its totient is φ = 490776000.

The previous prime is 494742263. The next prime is 494742293. The reversal of 494742289 is 982247494.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 494742289 - 2⁹ = 494741777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (494742239) 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, 131172 + ... + 134890.

It is an arithmetic number, because the mean of its divisors is an integer number (62339760).

Almost surely, 2^494742289 is an apocalyptic number.

It is an amenable number.

494742289 is a deficient number, since it is larger than the sum of its proper divisors (3975791).

494742289 is a wasteful number, since it uses less digits than its factorization.

494742289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4751.

The product of its digits is 1161216, while the sum is 49.

The square root of 494742289 is about 22242.8030832447. The cubic root of 494742289 is about 790.9086852106.

The spelling of 494742289 in words is "four hundred ninety-four million, seven hundred forty-two thousand, two hundred eighty-nine".