78908983 has 2 divisors, whose sum is σ = 78908984. Its totient is φ = 78908982.

The previous prime is 78908939. The next prime is 78908989. The reversal of 78908983 is 38980987.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78908983 - 2¹⁷ = 78777911 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78908983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78908989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39454491 + 39454492.

It is an arithmetic number, because the mean of its divisors is an integer number (39454492).

Almost surely, 2^78908983 is an apocalyptic number.

78908983 is a deficient number, since it is larger than the sum of its proper divisors (1).

78908983 is an equidigital number, since it uses as much as digits as its factorization.

78908983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 78908983 is about 8883.0728354551. The cubic root of 78908983 is about 428.9191948118.

The spelling of 78908983 in words is "seventy-eight million, nine hundred eight thousand, nine hundred eighty-three".