491317450 has 96 divisors (see below), whose sum is σ = 1044933120. Its totient is φ = 170553600.

The previous prime is 491317427. The next prime is 491317451. The reversal of 491317450 is 54713194.

491317450 = 3626² + 3627² + ... + 3662².

It is not an unprimeable number, because it can be changed into a prime (491317451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 745221 + ... + 745879.

It is an arithmetic number, because the mean of its divisors is an integer number (10884720).

Almost surely, 2^491317450 is an apocalyptic number.

491317450 is an abundant number, since it is smaller than the sum of its proper divisors (553615670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491317450 is a wasteful number, since it uses less digits than its factorization.

491317450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752 (or 747 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 491317450 is about 22165.6818076954. The cubic root of 491317450 is about 789.0794436711.

The spelling of 491317450 in words is "four hundred ninety-one million, three hundred seventeen thousand, four hundred fifty".