978808367 has 2 divisors, whose sum is σ = 978808368. Its totient is φ = 978808366.

The previous prime is 978808357. The next prime is 978808381. The reversal of 978808367 is 763808879.

It is a weak prime.

It is an emirp because it is prime and its reverse (763808879) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 978808367 - 2¹² = 978804271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (978808307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489404183 + 489404184.

It is an arithmetic number, because the mean of its divisors is an integer number (489404184).

Almost surely, 2^978808367 is an apocalyptic number.

978808367 is a deficient number, since it is larger than the sum of its proper divisors (1).

978808367 is an equidigital number, since it uses as much as digits as its factorization.

978808367 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4064256, while the sum is 56.

The square root of 978808367 is about 31285.9132358319. The cubic root of 978808367 is about 992.8856280751.

The spelling of 978808367 in words is "nine hundred seventy-eight million, eight hundred eight thousand, three hundred sixty-seven".