491707099 has 16 divisors (see below), whose sum is σ = 590194080. Its totient is φ = 404697600.

The previous prime is 491707081. The next prime is 491707103. The reversal of 491707099 is 990707194.

It is a cyclic number.

It is not a de Polignac number, because 491707099 - 2¹¹ = 491705051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491707009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54352 + ... + 62749.

It is an arithmetic number, because the mean of its divisors is an integer number (36887130).

Almost surely, 2^491707099 is an apocalyptic number.

491707099 is a deficient number, since it is larger than the sum of its proper divisors (98486981).

491707099 is a wasteful number, since it uses less digits than its factorization.

491707099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117150.

The product of its (nonzero) digits is 142884, while the sum is 46.

The square root of 491707099 is about 22174.4695314228. The cubic root of 491707099 is about 789.2879868928.

The spelling of 491707099 in words is "four hundred ninety-one million, seven hundred seven thousand, ninety-nine".