863457449 has 2 divisors, whose sum is σ = 863457450. Its totient is φ = 863457448.

The previous prime is 863457443. The next prime is 863457457. The reversal of 863457449 is 944754368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 848673424 + 14784025 = 29132^2 + 3845^2 .

It is a cyclic number.

It is not a de Polignac number, because 863457449 - 2⁸ = 863457193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 863457397 and 863457406.

It is not a weakly prime, because it can be changed into another prime (863457443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431728724 + 431728725.

It is an arithmetic number, because the mean of its divisors is an integer number (431728725).

Almost surely, 2^863457449 is an apocalyptic number.

It is an amenable number.

863457449 is a deficient number, since it is larger than the sum of its proper divisors (1).

863457449 is an equidigital number, since it uses as much as digits as its factorization.

863457449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 50.

The square root of 863457449 is about 29384.6464841761. The cubic root of 863457449 is about 952.2412269298.

The spelling of 863457449 in words is "eight hundred sixty-three million, four hundred fifty-seven thousand, four hundred forty-nine".