38386321 has 2 divisors, whose sum is σ = 38386322. Its totient is φ = 38386320.

The previous prime is 38386319. The next prime is 38386331. The reversal of 38386321 is 12368383.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28998225 + 9388096 = 5385^2 + 3064^2 .

It is a cyclic number.

It is not a de Polignac number, because 38386321 - 2¹ = 38386319 is a prime.

Together with 38386319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (38386331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19193160 + 19193161.

It is an arithmetic number, because the mean of its divisors is an integer number (19193161).

Almost surely, 2^38386321 is an apocalyptic number.

It is an amenable number.

38386321 is a deficient number, since it is larger than the sum of its proper divisors (1).

38386321 is an equidigital number, since it uses as much as digits as its factorization.

38386321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 34.

The square root of 38386321 is about 6195.6695360550. The cubic root of 38386321 is about 337.3330012400. Note that the first 3 decimals are identical.

The spelling of 38386321 in words is "thirty-eight million, three hundred eighty-six thousand, three hundred twenty-one".