39085209 has 12 divisors (see below), whose sum is σ = 57982756. Its totient is φ = 25352352.

The previous prime is 39085183. The next prime is 39085229. The reversal of 39085209 is 90258093.

It can be written as a sum of positive squares in 2 ways, for example, as 29648025 + 9437184 = 5445^2 + 3072^2 .

It is not a de Polignac number, because 39085209 - 2¹⁷ = 38954137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39085229) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 58354 + ... + 59019.

Almost surely, 2^39085209 is an apocalyptic number.

It is an amenable number.

39085209 is a deficient number, since it is larger than the sum of its proper divisors (18897547).

39085209 is a wasteful number, since it uses less digits than its factorization.

39085209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117416 (or 117413 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 39085209 is about 6251.8164560390. The cubic root of 39085209 is about 339.3679404940.

It can be divided in two parts, 3908520 and 9, that added together give a square (3908529 = 1977²).

The spelling of 39085209 in words is "thirty-nine million, eighty-five thousand, two hundred nine".