491298247 has 8 divisors (see below), whose sum is σ = 550447632. Its totient is φ = 434563200.

The previous prime is 491298233. The next prime is 491298271. The reversal of 491298247 is 742892194.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-491298247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 491298197 and 491298206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491298217) 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, 603154 + ... + 603967.

It is an arithmetic number, because the mean of its divisors is an integer number (68805954).

Almost surely, 2^491298247 is an apocalyptic number.

491298247 is a deficient number, since it is larger than the sum of its proper divisors (59149385).

491298247 is a wasteful number, since it uses less digits than its factorization.

491298247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207169.

The product of its digits is 290304, while the sum is 46.

The square root of 491298247 is about 22165.2486338412. The cubic root of 491298247 is about 789.0691632234.

The spelling of 491298247 in words is "four hundred ninety-one million, two hundred ninety-eight thousand, two hundred forty-seven".