491079419 has 2 divisors, whose sum is σ = 491079420. Its totient is φ = 491079418.

The previous prime is 491079367. The next prime is 491079431. The reversal of 491079419 is 914970194.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 491079419 - 2²⁸ = 222643963 is a prime.

It is a super-2 number, since 2×491079419² = 482317991530755122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 491079419.

It is not a weakly prime, because it can be changed into another prime (491079469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245539709 + 245539710.

It is an arithmetic number, because the mean of its divisors is an integer number (245539710).

Almost surely, 2^491079419 is an apocalyptic number.

491079419 is a deficient number, since it is larger than the sum of its proper divisors (1).

491079419 is an equidigital number, since it uses as much as digits as its factorization.

491079419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 491079419 is about 22160.3117983480. The cubic root of 491079419 is about 788.9519933437.

The spelling of 491079419 in words is "four hundred ninety-one million, seventy-nine thousand, four hundred nineteen".