78999467 has 2 divisors, whose sum is σ = 78999468. Its totient is φ = 78999466.

The previous prime is 78999463. The next prime is 78999469. The reversal of 78999467 is 76499987.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78999467 - 2² = 78999463 is a prime.

Together with 78999469, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (78999463) 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, 39499733 + 39499734.

It is an arithmetic number, because the mean of its divisors is an integer number (39499734).

Almost surely, 2^78999467 is an apocalyptic number.

78999467 is a deficient number, since it is larger than the sum of its proper divisors (1).

78999467 is an equidigital number, since it uses as much as digits as its factorization.

78999467 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6858432, while the sum is 59.

The square root of 78999467 is about 8888.1644336725. The cubic root of 78999467 is about 429.0830777140.

The spelling of 78999467 in words is "seventy-eight million, nine hundred ninety-nine thousand, four hundred sixty-seven".