38768209 has 4 divisors (see below), whose sum is σ = 38982580. Its totient is φ = 38553840.

The previous prime is 38768203. The next prime is 38768231. The reversal of 38768209 is 90286783.

38768209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90286783 = 1511 ⋅59753.

It can be written as a sum of positive squares in 2 ways, for example, as 8573184 + 30195025 = 2928^2 + 5495^2 .

It is a cyclic number.

It is not a de Polignac number, because 38768209 - 2¹⁵ = 38735441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38768203) 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, 106914 + ... + 107275.

It is an arithmetic number, because the mean of its divisors is an integer number (9745645).

Almost surely, 2^38768209 is an apocalyptic number.

It is an amenable number.

38768209 is a deficient number, since it is larger than the sum of its proper divisors (214371).

38768209 is a wasteful number, since it uses less digits than its factorization.

38768209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214370.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 38768209 is about 6226.4122092904. The cubic root of 38768209 is about 338.4479693291.

The spelling of 38768209 in words is "thirty-eight million, seven hundred sixty-eight thousand, two hundred nine".