78382867 has 2 divisors, whose sum is σ = 78382868. Its totient is φ = 78382866.

The previous prime is 78382859. The next prime is 78382877. The reversal of 78382867 is 76828387.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78382867 - 2³ = 78382859 is a prime.

It is a super-3 number, since 3×78382867³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 78382867.

It is not a weakly prime, because it can be changed into another prime (78382877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39191433 + 39191434.

It is an arithmetic number, because the mean of its divisors is an integer number (39191434).

Almost surely, 2^78382867 is an apocalyptic number.

78382867 is a deficient number, since it is larger than the sum of its proper divisors (1).

78382867 is an equidigital number, since it uses as much as digits as its factorization.

78382867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 903168, while the sum is 49.

The square root of 78382867 is about 8853.4099080524. The cubic root of 78382867 is about 427.9638129215.

The spelling of 78382867 in words is "seventy-eight million, three hundred eighty-two thousand, eight hundred sixty-seven".