39639146 has 8 divisors (see below), whose sum is σ = 60273444. Its totient is φ = 19548000.

The previous prime is 39639139. The next prime is 39639179. The reversal of 39639146 is 64193693.

39639146 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 38925121 + 714025 = 6239^2 + 845^2 .

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

It is an unprimeable number.

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, 135605 + ... + 135896.

Almost surely, 2^39639146 is an apocalyptic number.

39639146 is a deficient number, since it is larger than the sum of its proper divisors (20634298).

39639146 is a wasteful number, since it uses less digits than its factorization.

39639146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271576.

The product of its digits is 104976, while the sum is 41.

The square root of 39639146 is about 6295.9626746035. The cubic root of 39639146 is about 340.9636617309.

The spelling of 39639146 in words is "thirty-nine million, six hundred thirty-nine thousand, one hundred forty-six".