863452649 has 2 divisors, whose sum is σ = 863452650. Its totient is φ = 863452648.

The previous prime is 863452633. The next prime is 863452679. The reversal of 863452649 is 946254368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 708624400 + 154828249 = 26620^2 + 12443^2 .

It is a cyclic number.

It is not a de Polignac number, because 863452649 - 2⁴ = 863452633 is a prime.

It is not a weakly prime, because it can be changed into another prime (863452619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431726324 + 431726325.

It is an arithmetic number, because the mean of its divisors is an integer number (431726325).

Almost surely, 2^863452649 is an apocalyptic number.

It is an amenable number.

863452649 is a deficient number, since it is larger than the sum of its proper divisors (1).

863452649 is an equidigital number, since it uses as much as digits as its factorization.

863452649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 47.

The square root of 863452649 is about 29384.5648087563. The cubic root of 863452649 is about 952.2394624088.

The spelling of 863452649 in words is "eight hundred sixty-three million, four hundred fifty-two thousand, six hundred forty-nine".