78562349 has 2 divisors, whose sum is σ = 78562350. Its totient is φ = 78562348.

The previous prime is 78562331. The next prime is 78562369. The reversal of 78562349 is 94326587.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76825225 + 1737124 = 8765^2 + 1318^2 .

It is an emirp because it is prime and its reverse (94326587) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78562349 - 2²⁴ = 61785133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78562369) 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, 39281174 + 39281175.

It is an arithmetic number, because the mean of its divisors is an integer number (39281175).

Almost surely, 2^78562349 is an apocalyptic number.

It is an amenable number.

78562349 is a deficient number, since it is larger than the sum of its proper divisors (1).

78562349 is an equidigital number, since it uses as much as digits as its factorization.

78562349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 44.

The square root of 78562349 is about 8863.5404325811. The cubic root of 78562349 is about 428.2902160854.

The spelling of 78562349 in words is "seventy-eight million, five hundred sixty-two thousand, three hundred forty-nine".