978317369 has 2 divisors, whose sum is σ = 978317370. Its totient is φ = 978317368.

The previous prime is 978317293. The next prime is 978317387. The reversal of 978317369 is 963713879.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 659873344 + 318444025 = 25688^2 + 17845^2 .

It is an emirp because it is prime and its reverse (963713879) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-978317369 is a prime.

It is a super-2 number, since 2×978317369² = 1914209748974164322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 978317369.

It is not a weakly prime, because it can be changed into another prime (978317399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489158684 + 489158685.

It is an arithmetic number, because the mean of its divisors is an integer number (489158685).

Almost surely, 2^978317369 is an apocalyptic number.

It is an amenable number.

978317369 is a deficient number, since it is larger than the sum of its proper divisors (1).

978317369 is an equidigital number, since it uses as much as digits as its factorization.

978317369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1714608, while the sum is 53.

The square root of 978317369 is about 31278.0653014217. The cubic root of 978317369 is about 992.7195804563.

The spelling of 978317369 in words is "nine hundred seventy-eight million, three hundred seventeen thousand, three hundred sixty-nine".