491430041 has 16 divisors (see below), whose sum is σ = 533064000. Its totient is φ = 451459008.

The previous prime is 491430019. The next prime is 491430053. The reversal of 491430041 is 140034194.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-491430041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (491430241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244346 + ... + 246348.

It is an arithmetic number, because the mean of its divisors is an integer number (33316500).

Almost surely, 2^491430041 is an apocalyptic number.

It is an amenable number.

491430041 is a deficient number, since it is larger than the sum of its proper divisors (41633959).

491430041 is a wasteful number, since it uses less digits than its factorization.

491430041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 491430041 is about 22168.2214216657. The cubic root of 491430041 is about 789.1397145869.

The spelling of 491430041 in words is "four hundred ninety-one million, four hundred thirty thousand, forty-one".