78014249 has 2 divisors, whose sum is σ = 78014250. Its totient is φ = 78014248.

The previous prime is 78014231. The next prime is 78014329. The reversal of 78014249 is 94241087.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76650025 + 1364224 = 8755^2 + 1168^2 .

It is an emirp because it is prime and its reverse (94241087) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78014249 - 2⁸ = 78013993 is a prime.

It is not a weakly prime, because it can be changed into another prime (78014549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39007124 + 39007125.

It is an arithmetic number, because the mean of its divisors is an integer number (39007125).

Almost surely, 2^78014249 is an apocalyptic number.

It is an amenable number.

78014249 is a deficient number, since it is larger than the sum of its proper divisors (1).

78014249 is an equidigital number, since it uses as much as digits as its factorization.

78014249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 78014249 is about 8832.5675202627. The cubic root of 78014249 is about 427.2918841556.

The spelling of 78014249 in words is "seventy-eight million, fourteen thousand, two hundred forty-nine".