494931091 has 2 divisors, whose sum is σ = 494931092. Its totient is φ = 494931090.

The previous prime is 494931083. The next prime is 494931097. The reversal of 494931091 is 190139494.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 494931091 - 2³ = 494931083 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (494931097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247465545 + 247465546.

It is an arithmetic number, because the mean of its divisors is an integer number (247465546).

Almost surely, 2^494931091 is an apocalyptic number.

494931091 is a deficient number, since it is larger than the sum of its proper divisors (1).

494931091 is an equidigital number, since it uses as much as digits as its factorization.

494931091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 494931091 is about 22247.0467927768. The cubic root of 494931091 is about 791.0092804457.

The spelling of 494931091 in words is "four hundred ninety-four million, nine hundred thirty-one thousand, ninety-one".