2489491 has 2 divisors, whose sum is σ = 2489492. Its totient is φ = 2489490.

The previous prime is 2489483. The next prime is 2489521. The reversal of 2489491 is 1949842.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2489491 - 2³ = 2489483 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 2489491.

It is not a weakly prime, because it can be changed into another prime (2489411) 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, 1244745 + 1244746.

It is an arithmetic number, because the mean of its divisors is an integer number (1244746).

2^2489491 is an apocalyptic number.

2489491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2489491 is an equidigital number, since it uses as much as digits as its factorization.

2489491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 37.

The square root of 2489491 is about 1577.8120927411. The cubic root of 2489491 is about 135.5304416383.

The spelling of 2489491 in words is "two million, four hundred eighty-nine thousand, four hundred ninety-one".