2478449 has 2 divisors, whose sum is σ = 2478450. Its totient is φ = 2478448.

The previous prime is 2478407. The next prime is 2478473. The reversal of 2478449 is 9448742.

2478449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1849600 + 628849 = 1360^2 + 793^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2478449 is a prime.

It is a super-2 number, since 2×2478449² = 12285418891202, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2478479) 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, 1239224 + 1239225.

It is an arithmetic number, because the mean of its divisors is an integer number (1239225).

2^2478449 is an apocalyptic number.

It is an amenable number.

2478449 is a deficient number, since it is larger than the sum of its proper divisors (1).

2478449 is an equidigital number, since it uses as much as digits as its factorization.

2478449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 38.

The square root of 2478449 is about 1574.3090547920. The cubic root of 2478449 is about 135.3297653833.

The spelling of 2478449 in words is "two million, four hundred seventy-eight thousand, four hundred forty-nine".