2856449 has 2 divisors, whose sum is σ = 2856450. Its totient is φ = 2856448.

The previous prime is 2856431. The next prime is 2856461. The reversal of 2856449 is 9446582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1575025 + 1281424 = 1255^2 + 1132^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2856449 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2856409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1428224 + 1428225.

It is an arithmetic number, because the mean of its divisors is an integer number (1428225).

2^2856449 is an apocalyptic number.

It is an amenable number.

2856449 is a deficient number, since it is larger than the sum of its proper divisors (1).

2856449 is an equidigital number, since it uses as much as digits as its factorization.

2856449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 38.

The square root of 2856449 is about 1690.1032512838. The cubic root of 2856449 is about 141.8868535963.

The spelling of 2856449 in words is "two million, eight hundred fifty-six thousand, four hundred forty-nine".