491344967 has 2 divisors, whose sum is σ = 491344968. Its totient is φ = 491344966.

The previous prime is 491344937. The next prime is 491344981. The reversal of 491344967 is 769443194.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 491344967 - 2²² = 487150663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (491344907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245672483 + 245672484.

It is an arithmetic number, because the mean of its divisors is an integer number (245672484).

Almost surely, 2^491344967 is an apocalyptic number.

491344967 is a deficient number, since it is larger than the sum of its proper divisors (1).

491344967 is an equidigital number, since it uses as much as digits as its factorization.

491344967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 47.

The square root of 491344967 is about 22166.3025107933. The cubic root of 491344967 is about 789.0941746043.

The spelling of 491344967 in words is "four hundred ninety-one million, three hundred forty-four thousand, nine hundred sixty-seven".