39945079 has 2 divisors, whose sum is σ = 39945080. Its totient is φ = 39945078.

The previous prime is 39945067. The next prime is 39945091. The reversal of 39945079 is 97054993.

39945079 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (39945067) and next prime (39945091).

It is a cyclic number.

It is not a de Polignac number, because 39945079 - 2⁵ = 39945047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39942079) 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, 19972539 + 19972540.

It is an arithmetic number, because the mean of its divisors is an integer number (19972540).

Almost surely, 2^39945079 is an apocalyptic number.

39945079 is a deficient number, since it is larger than the sum of its proper divisors (1).

39945079 is an equidigital number, since it uses as much as digits as its factorization.

39945079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 306180, while the sum is 46.

The square root of 39945079 is about 6320.2119426488. The cubic root of 39945079 is about 341.8385949959.

The spelling of 39945079 in words is "thirty-nine million, nine hundred forty-five thousand, seventy-nine".