491234099 has 2 divisors, whose sum is σ = 491234100. Its totient is φ = 491234098.

The previous prime is 491234071. The next prime is 491234101. The reversal of 491234099 is 990432194.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-491234099 is a prime.

Together with 491234101, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (491234399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245617049 + 245617050.

It is an arithmetic number, because the mean of its divisors is an integer number (245617050).

Almost surely, 2^491234099 is an apocalyptic number.

491234099 is a deficient number, since it is larger than the sum of its proper divisors (1).

491234099 is an equidigital number, since it uses as much as digits as its factorization.

491234099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 491234099 is about 22163.8015466661. The cubic root of 491234099 is about 789.0348192432.

The spelling of 491234099 in words is "four hundred ninety-one million, two hundred thirty-four thousand, ninety-nine".