78056039 has 2 divisors, whose sum is σ = 78056040. Its totient is φ = 78056038.

The previous prime is 78055987. The next prime is 78056063. The reversal of 78056039 is 93065087.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78056039 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 78055993 and 78056011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78056339) 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, 39028019 + 39028020.

It is an arithmetic number, because the mean of its divisors is an integer number (39028020).

Almost surely, 2^78056039 is an apocalyptic number.

78056039 is a deficient number, since it is larger than the sum of its proper divisors (1).

78056039 is an equidigital number, since it uses as much as digits as its factorization.

78056039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 78056039 is about 8834.9328803336. The cubic root of 78056039 is about 427.3681665467.

The spelling of 78056039 in words is "seventy-eight million, fifty-six thousand, thirty-nine".