2105449 has 2 divisors, whose sum is σ = 2105450. Its totient is φ = 2105448.

The previous prime is 2105431. The next prime is 2105483. The reversal of 2105449 is 9445012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2088025 + 17424 = 1445^2 + 132^2 .

It is a cyclic number.

It is not a de Polignac number, because 2105449 - 2⁵ = 2105417 is a prime.

It is not a weakly prime, because it can be changed into another prime (2105419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052724 + 1052725.

It is an arithmetic number, because the mean of its divisors is an integer number (1052725).

2^2105449 is an apocalyptic number.

It is an amenable number.

2105449 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105449 is an equidigital number, since it uses as much as digits as its factorization.

2105449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2105449 is about 1451.0165402228. The cubic root of 2105449 is about 128.1685807725.

The spelling of 2105449 in words is "two million, one hundred five thousand, four hundred forty-nine".