39009986 has 8 divisors (see below), whose sum is σ = 58549260. Its totient is φ = 19493568.

The previous prime is 39009941. The next prime is 39009989. The reversal of 39009986 is 68990093.

39009986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 30195025 + 8814961 = 5495^2 + 2969^2 .

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

It is a super-3 number, since 3×39009986³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39009989) 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 3 ways as a sum of consecutive naturals, for example, 491 + ... + 8846.

Almost surely, 2^39009986 is an apocalyptic number.

39009986 is a deficient number, since it is larger than the sum of its proper divisors (19539274).

39009986 is a wasteful number, since it uses less digits than its factorization.

39009986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11428.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 39009986 is about 6245.7974670974. The cubic root of 39009986 is about 339.1500859660.

The spelling of 39009986 in words is "thirty-nine million, nine thousand, nine hundred eighty-six".