2091449 has 2 divisors, whose sum is σ = 2091450. Its totient is φ = 2091448.

The previous prime is 2091443. The next prime is 2091461. The reversal of 2091449 is 9441902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1841449 + 250000 = 1357^2 + 500^2 .

It is a cyclic number.

It is not a de Polignac number, because 2091449 - 2¹² = 2087353 is a prime.

It is not a weakly prime, because it can be changed into another prime (2091443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045724 + 1045725.

It is an arithmetic number, because the mean of its divisors is an integer number (1045725).

2^2091449 is an apocalyptic number.

It is an amenable number.

2091449 is a deficient number, since it is larger than the sum of its proper divisors (1).

2091449 is an equidigital number, since it uses as much as digits as its factorization.

2091449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 2091449 is about 1446.1842897778. The cubic root of 2091449 is about 127.8838668333.

The spelling of 2091449 in words is "two million, ninety-one thousand, four hundred forty-nine".