78448963 has 2 divisors, whose sum is σ = 78448964. Its totient is φ = 78448962.

The previous prime is 78448927. The next prime is 78449009. The reversal of 78448963 is 36984487.

It is a weak prime.

It is an emirp because it is prime and its reverse (36984487) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78448963 is a prime.

It is not a weakly prime, because it can be changed into another prime (78448913) 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, 39224481 + 39224482.

It is an arithmetic number, because the mean of its divisors is an integer number (39224482).

Almost surely, 2^78448963 is an apocalyptic number.

78448963 is a deficient number, since it is larger than the sum of its proper divisors (1).

78448963 is an equidigital number, since it uses as much as digits as its factorization.

78448963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 49.

The square root of 78448963 is about 8857.1419205069. The cubic root of 78448963 is about 428.0840719786.

It can be divided in two parts, 7844 and 8963, that added together give a 5-th power (16807 = 7⁵).

The spelling of 78448963 in words is "seventy-eight million, four hundred forty-eight thousand, nine hundred sixty-three".