39939146 has 8 divisors (see below), whose sum is σ = 64517124. Its totient is φ = 18433440.

The previous prime is 39939139. The next prime is 39939173. The reversal of 39939146 is 64193993.

It can be written as a sum of positive squares in 2 ways, for example, as 29278921 + 10660225 = 5411^2 + 3265^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 39939097 and 39939106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 768035 + ... + 768086.

Almost surely, 2^39939146 is an apocalyptic number.

39939146 is a deficient number, since it is larger than the sum of its proper divisors (24577978).

39939146 is a wasteful number, since it uses less digits than its factorization.

39939146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1536136.

The product of its digits is 157464, while the sum is 44.

The square root of 39939146 is about 6319.7425580478. The cubic root of 39939146 is about 341.8216698505.

The spelling of 39939146 in words is "thirty-nine million, nine hundred thirty-nine thousand, one hundred forty-six".