38356909 has 4 divisors (see below), whose sum is σ = 38371516. Its totient is φ = 38342304.

The previous prime is 38356907. The next prime is 38356943. The reversal of 38356909 is 90965383.

38356909 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: 90965383 = 5113 ⋅17791.

It can be written as a sum of positive squares in 2 ways, for example, as 15288100 + 23068809 = 3910^2 + 4803^2 .

It is a cyclic number.

It is not a de Polignac number, because 38356909 - 2¹ = 38356907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38356907) 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, 2154 + ... + 9019.

It is an arithmetic number, because the mean of its divisors is an integer number (9592879).

Almost surely, 2^38356909 is an apocalyptic number.

It is an amenable number.

38356909 is a deficient number, since it is larger than the sum of its proper divisors (14607).

38356909 is a wasteful number, since it uses less digits than its factorization.

38356909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14606.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 38356909 is about 6193.2954878643. The cubic root of 38356909 is about 337.2468232033.

The spelling of 38356909 in words is "thirty-eight million, three hundred fifty-six thousand, nine hundred nine".