78443203 has 2 divisors, whose sum is σ = 78443204. Its totient is φ = 78443202.

The previous prime is 78443161. The next prime is 78443207. The reversal of 78443203 is 30234487.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78443203 - 2⁹ = 78442691 is a prime.

It is not a weakly prime, because it can be changed into another prime (78443207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39221601 + 39221602.

It is an arithmetic number, because the mean of its divisors is an integer number (39221602).

Almost surely, 2^78443203 is an apocalyptic number.

78443203 is a deficient number, since it is larger than the sum of its proper divisors (1).

78443203 is an equidigital number, since it uses as much as digits as its factorization.

78443203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 78443203 is about 8856.8167532133. The cubic root of 78443203 is about 428.0735945739.

The spelling of 78443203 in words is "seventy-eight million, four hundred forty-three thousand, two hundred three".