38825309 has 8 divisors (see below), whose sum is σ = 39955032. Its totient is φ = 37710400.

The previous prime is 38825291. The next prime is 38825323. The reversal of 38825309 is 90352883.

38825309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 24552025 + 14273284 = 4955^2 + 3778^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 38825309 - 2¹² = 38821213 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 (38825359) 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 7 ways as a sum of consecutive naturals, for example, 1727 + ... + 8979.

It is an arithmetic number, because the mean of its divisors is an integer number (4994379).

Almost surely, 2^38825309 is an apocalyptic number.

It is an amenable number.

38825309 is a deficient number, since it is larger than the sum of its proper divisors (1129723).

38825309 is a wasteful number, since it uses less digits than its factorization.

38825309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7407.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 38825309 is about 6230.9958273136. The cubic root of 38825309 is about 338.6140495571.

The spelling of 38825309 in words is "thirty-eight million, eight hundred twenty-five thousand, three hundred nine".