8978369 has 2 divisors, whose sum is σ = 8978370. Its totient is φ = 8978368.

The previous prime is 8978353. The next prime is 8978377. The reversal of 8978369 is 9638798.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8880400 + 97969 = 2980^2 + 313^2 .

It is a cyclic number.

It is not a de Polignac number, because 8978369 - 2⁴ = 8978353 is a prime.

It is a super-2 number, since 2×8978369² = 161222219800322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (8978069) 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, 4489184 + 4489185.

It is an arithmetic number, because the mean of its divisors is an integer number (4489185).

Almost surely, 2^8978369 is an apocalyptic number.

It is an amenable number.

8978369 is a deficient number, since it is larger than the sum of its proper divisors (1).

8978369 is an equidigital number, since it uses as much as digits as its factorization.

8978369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 50.

The square root of 8978369 is about 2996.3926645218. The cubic root of 8978369 is about 207.8416030886.

The spelling of 8978369 in words is "eight million, nine hundred seventy-eight thousand, three hundred sixty-nine".