8978243 has 2 divisors, whose sum is σ = 8978244. Its totient is φ = 8978242.

The previous prime is 8978239. The next prime is 8978273. The reversal of 8978243 is 3428798.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8978243 - 2² = 8978239 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 8² + 9³ + 7² + 8² + 2²² + 4³ + 3¹⁴ .

It is a self number, because there is not a number n which added to its sum of digits gives 8978243.

It is not a weakly prime, because it can be changed into another prime (8978273) 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, 4489121 + 4489122.

It is an arithmetic number, because the mean of its divisors is an integer number (4489122).

Almost surely, 2^8978243 is an apocalyptic number.

8978243 is a deficient number, since it is larger than the sum of its proper divisors (1).

8978243 is an equidigital number, since it uses as much as digits as its factorization.

8978243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 41.

The square root of 8978243 is about 2996.3716391663. The cubic root of 8978243 is about 207.8406308198.

The spelling of 8978243 in words is "eight million, nine hundred seventy-eight thousand, two hundred forty-three".