38675209 has 4 divisors (see below), whose sum is σ = 38691604. Its totient is φ = 38658816.

The previous prime is 38675207. The next prime is 38675227. The reversal of 38675209 is 90257683.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33315984 + 5359225 = 5772^2 + 2315^2 .

It is a cyclic number.

It is not a de Polignac number, because 38675209 - 2¹ = 38675207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38675201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3912 + ... + 9625.

It is an arithmetic number, because the mean of its divisors is an integer number (9672901).

Almost surely, 2^38675209 is an apocalyptic number.

It is an amenable number.

38675209 is a deficient number, since it is larger than the sum of its proper divisors (16395).

38675209 is a wasteful number, since it uses less digits than its factorization.

38675209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16394.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 38675209 is about 6218.9395398251. The cubic root of 38675209 is about 338.1771214338.

The spelling of 38675209 in words is "thirty-eight million, six hundred seventy-five thousand, two hundred nine".