878996243 has 2 divisors, whose sum is σ = 878996244. Its totient is φ = 878996242.

The previous prime is 878996197. The next prime is 878996263. The reversal of 878996243 is 342699878.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 878996243 - 2¹⁰ = 878995219 is a prime.

It is not a weakly prime, because it can be changed into another prime (878996263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439498121 + 439498122.

It is an arithmetic number, because the mean of its divisors is an integer number (439498122).

Almost surely, 2^878996243 is an apocalyptic number.

878996243 is a deficient number, since it is larger than the sum of its proper divisors (1).

878996243 is an equidigital number, since it uses as much as digits as its factorization.

878996243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 56.

The square root of 878996243 is about 29647.8708004470. The cubic root of 878996243 is about 957.9194827023.

The spelling of 878996243 in words is "eight hundred seventy-eight million, nine hundred ninety-six thousand, two hundred forty-three".