78886963 has 2 divisors, whose sum is σ = 78886964. Its totient is φ = 78886962.

The previous prime is 78886957. The next prime is 78886981. The reversal of 78886963 is 36968887.

It is a weak prime.

It is an emirp because it is prime and its reverse (36968887) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78886963 - 2¹³ = 78878771 is a prime.

It is not a weakly prime, because it can be changed into another prime (78886903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39443481 + 39443482.

It is an arithmetic number, because the mean of its divisors is an integer number (39443482).

Almost surely, 2^78886963 is an apocalyptic number.

78886963 is a deficient number, since it is larger than the sum of its proper divisors (1).

78886963 is an equidigital number, since it uses as much as digits as its factorization.

78886963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 55.

The square root of 78886963 is about 8881.8333130047. The cubic root of 78886963 is about 428.8792936540.

The spelling of 78886963 in words is "seventy-eight million, eight hundred eighty-six thousand, nine hundred sixty-three".