39968069 has 8 divisors (see below), whose sum is σ = 40589472. Its totient is φ = 39350160.

The previous prime is 39968063. The next prime is 39968081. The reversal of 39968069 is 96086993.

39968069 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 not a de Polignac number, because 39968069 - 2²⁰ = 38919493 is a prime.

It is a super-2 number, since 2×39968069² = 3194893079177522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39968063) 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, 30314 + ... + 31604.

It is an arithmetic number, because the mean of its divisors is an integer number (5073684).

Almost surely, 2^39968069 is an apocalyptic number.

It is an amenable number.

39968069 is a deficient number, since it is larger than the sum of its proper divisors (621403).

39968069 is a wasteful number, since it uses less digits than its factorization.

39968069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747.

The product of its (nonzero) digits is 629856, while the sum is 50.

The square root of 39968069 is about 6322.0304491516. The cubic root of 39968069 is about 341.9041630398.

The spelling of 39968069 in words is "thirty-nine million, nine hundred sixty-eight thousand, sixty-nine".