78344093 has 2 divisors, whose sum is σ = 78344094. Its totient is φ = 78344092.

The previous prime is 78344083. The next prime is 78344129. The reversal of 78344093 is 39044387.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67930564 + 10413529 = 8242^2 + 3227^2 .

It is a cyclic number.

It is not a de Polignac number, because 78344093 - 2¹² = 78339997 is a prime.

It is a super-2 number, since 2×78344093² = 12275593815985298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78344033) 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, 39172046 + 39172047.

It is an arithmetic number, because the mean of its divisors is an integer number (39172047).

Almost surely, 2^78344093 is an apocalyptic number.

It is an amenable number.

78344093 is a deficient number, since it is larger than the sum of its proper divisors (1).

78344093 is an equidigital number, since it uses as much as digits as its factorization.

78344093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 78344093 is about 8851.2198594318. The cubic root of 78344093 is about 427.8932336973.

The spelling of 78344093 in words is "seventy-eight million, three hundred forty-four thousand, ninety-three".