39966307 has 8 divisors (see below), whose sum is σ = 41027184. Its totient is φ = 38911488.

The previous prime is 39966281. The next prime is 39966317. The reversal of 39966307 is 70366993.

It is a happy number.

39966307 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39966307 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39966317) 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 in 7 ways as a sum of consecutive naturals, for example, 13863 + ... + 16495.

It is an arithmetic number, because the mean of its divisors is an integer number (5128398).

Almost surely, 2^39966307 is an apocalyptic number.

39966307 is a deficient number, since it is larger than the sum of its proper divisors (1060877).

39966307 is a wasteful number, since it uses less digits than its factorization.

39966307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3029.

The product of its (nonzero) digits is 183708, while the sum is 43.

The square root of 39966307 is about 6321.8910936523. The cubic root of 39966307 is about 341.8991386624.

The spelling of 39966307 in words is "thirty-nine million, nine hundred sixty-six thousand, three hundred seven".