491384135 has 8 divisors (see below), whose sum is σ = 643266576. Its totient is φ = 357370240.

The previous prime is 491384129. The next prime is 491384141. The reversal of 491384135 is 531483194.

It is an interprime number because it is at equal distance from previous prime (491384129) and next prime (491384141).

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

It is a de Polignac number, because none of the positive numbers 2^k-491384135 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4467074 + ... + 4467183.

It is an arithmetic number, because the mean of its divisors is an integer number (80408322).

Almost surely, 2^491384135 is an apocalyptic number.

491384135 is a deficient number, since it is larger than the sum of its proper divisors (151882441).

491384135 is a wasteful number, since it uses less digits than its factorization.

491384135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8934273.

The product of its digits is 51840, while the sum is 38.

The square root of 491384135 is about 22167.1859964227. The cubic root of 491384135 is about 789.1151418280.

The spelling of 491384135 in words is "four hundred ninety-one million, three hundred eighty-four thousand, one hundred thirty-five".