2491967 has 2 divisors, whose sum is σ = 2491968. Its totient is φ = 2491966.

The previous prime is 2491963. The next prime is 2492003. The reversal of 2491967 is 7691942.

2491967 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2491967 - 2² = 2491963 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 2491967.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2491961) 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, 1245983 + 1245984.

It is an arithmetic number, because the mean of its divisors is an integer number (1245984).

2^2491967 is an apocalyptic number.

2491967 is a deficient number, since it is larger than the sum of its proper divisors (1).

2491967 is an equidigital number, since it uses as much as digits as its factorization.

2491967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 38.

The square root of 2491967 is about 1578.5965285658. The cubic root of 2491967 is about 135.5753587430.

The spelling of 2491967 in words is "two million, four hundred ninety-one thousand, nine hundred sixty-seven".