491246953 has 8 divisors (see below), whose sum is σ = 505844136. Its totient is φ = 476774400.

The previous prime is 491246947. The next prime is 491246963. The reversal of 491246953 is 359642194.

491246953 = 2407² + 2408² + ... + 2488².

It can be written as a sum of positive squares in 4 ways, for example, as 51380224 + 439866729 = 7168^2 + 20973^2 .

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-491246953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491246963) by changing a digit.

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, 23128 + ... + 38953.

It is an arithmetic number, because the mean of its divisors is an integer number (63230517).

Almost surely, 2^491246953 is an apocalyptic number.

It is an amenable number.

491246953 is a deficient number, since it is larger than the sum of its proper divisors (14597183).

491246953 is a wasteful number, since it uses less digits than its factorization.

491246953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62315.

The product of its digits is 233280, while the sum is 43.

The square root of 491246953 is about 22164.0915220994. The cubic root of 491246953 is about 789.0417013422.

The spelling of 491246953 in words is "four hundred ninety-one million, two hundred forty-six thousand, nine hundred fifty-three".