78938527 has 2 divisors, whose sum is σ = 78938528. Its totient is φ = 78938526.

The previous prime is 78938513. The next prime is 78938533. The reversal of 78938527 is 72583987.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78938527 - 2⁷ = 78938399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78938537) 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, 39469263 + 39469264.

It is an arithmetic number, because the mean of its divisors is an integer number (39469264).

Almost surely, 2^78938527 is an apocalyptic number.

78938527 is a deficient number, since it is larger than the sum of its proper divisors (1).

78938527 is an equidigital number, since it uses as much as digits as its factorization.

78938527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 846720, while the sum is 49.

The square root of 78938527 is about 8884.7356179011. The cubic root of 78938527 is about 428.9727181119.

The spelling of 78938527 in words is "seventy-eight million, nine hundred thirty-eight thousand, five hundred twenty-seven".