78936467 has 2 divisors, whose sum is σ = 78936468. Its totient is φ = 78936466.

The previous prime is 78936461. The next prime is 78936479. The reversal of 78936467 is 76463987.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78936467 - 2⁸ = 78936211 is a prime.

It is not a weakly prime, because it can be changed into another prime (78936461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39468233 + 39468234.

It is an arithmetic number, because the mean of its divisors is an integer number (39468234).

Almost surely, 2^78936467 is an apocalyptic number.

78936467 is a deficient number, since it is larger than the sum of its proper divisors (1).

78936467 is an equidigital number, since it uses as much as digits as its factorization.

78936467 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 50.

The square root of 78936467 is about 8884.6196879776. The cubic root of 78936467 is about 428.9689865522.

The spelling of 78936467 in words is "seventy-eight million, nine hundred thirty-six thousand, four hundred sixty-seven".