78583423 has 2 divisors, whose sum is σ = 78583424. Its totient is φ = 78583422.

The previous prime is 78583399. The next prime is 78583459. The reversal of 78583423 is 32438587.

It is a weak prime.

It is an emirp because it is prime and its reverse (32438587) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78583423 - 2⁵ = 78583391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78583493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39291711 + 39291712.

It is an arithmetic number, because the mean of its divisors is an integer number (39291712).

Almost surely, 2^78583423 is an apocalyptic number.

78583423 is a deficient number, since it is larger than the sum of its proper divisors (1).

78583423 is an equidigital number, since it uses as much as digits as its factorization.

78583423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 40.

The square root of 78583423 is about 8864.7291554790. The cubic root of 78583423 is about 428.3285083090.

The spelling of 78583423 in words is "seventy-eight million, five hundred eighty-three thousand, four hundred twenty-three".