912491 has 2 divisors, whose sum is σ = 912492. Its totient is φ = 912490.

The previous prime is 912487. The next prime is 912497. The reversal of 912491 is 194219.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 912491 - 2² = 912487 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 912491.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 912491.

It is not a weakly prime, because it can be changed into another prime (912497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456245 + 456246.

It is an arithmetic number, because the mean of its divisors is an integer number (456246).

2⁹¹²⁴⁹¹ is an apocalyptic number.

912491 is a deficient number, since it is larger than the sum of its proper divisors (1).

912491 is an equidigital number, since it uses as much as digits as its factorization.

912491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 26.

The square root of 912491 is about 955.2439479002. The cubic root of 912491 is about 96.9935518440.

The spelling of 912491 in words is "nine hundred twelve thousand, four hundred ninety-one".