78434003 has 2 divisors, whose sum is σ = 78434004. Its totient is φ = 78434002.

The previous prime is 78433973. The next prime is 78434029. The reversal of 78434003 is 30043487.

It is a strong prime.

It is an emirp because it is prime and its reverse (30043487) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78434003 - 2⁶ = 78433939 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (78434093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39217001 + 39217002.

It is an arithmetic number, because the mean of its divisors is an integer number (39217002).

Almost surely, 2^78434003 is an apocalyptic number.

78434003 is a deficient number, since it is larger than the sum of its proper divisors (1).

78434003 is an equidigital number, since it uses as much as digits as its factorization.

78434003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 78434003 is about 8856.2973640230. The cubic root of 78434003 is about 428.0568587663.

The spelling of 78434003 in words is "seventy-eight million, four hundred thirty-four thousand, three".