2103449 has 2 divisors, whose sum is σ = 2103450. Its totient is φ = 2103448.

The previous prime is 2103407. The next prime is 2103473. The reversal of 2103449 is 9443012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1690000 + 413449 = 1300^2 + 643^2 .

It is a cyclic number.

It is not a de Polignac number, because 2103449 - 2⁸ = 2103193 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2²¹ + 1 + 0 + 3⁷ + 4 + 4⁶ + 9 .

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2103149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051724 + 1051725.

It is an arithmetic number, because the mean of its divisors is an integer number (1051725).

2^2103449 is an apocalyptic number.

It is an amenable number.

2103449 is a deficient number, since it is larger than the sum of its proper divisors (1).

2103449 is an equidigital number, since it uses as much as digits as its factorization.

2103449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2103449 is about 1450.3272044611. The cubic root of 2103449 is about 128.1279847808.

It can be divided in two parts, 2103 and 449, that added together give a palindrome (2552).

The spelling of 2103449 in words is "two million, one hundred three thousand, four hundred forty-nine".