38563729 has 2 divisors, whose sum is σ = 38563730. Its totient is φ = 38563728.

The previous prime is 38563727. The next prime is 38563741. The reversal of 38563729 is 92736583.

38563729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24275329 + 14288400 = 4927^2 + 3780^2 .

It is an emirp because it is prime and its reverse (92736583) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38563729 - 2¹ = 38563727 is a prime.

It is a super-2 number, since 2×38563729² = 2974322388770882, which contains 22 as substring.

Together with 38563727, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (38563727) 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 as a sum of consecutive naturals, namely, 19281864 + 19281865.

It is an arithmetic number, because the mean of its divisors is an integer number (19281865).

Almost surely, 2^38563729 is an apocalyptic number.

It is an amenable number.

38563729 is a deficient number, since it is larger than the sum of its proper divisors (1).

38563729 is an equidigital number, since it uses as much as digits as its factorization.

38563729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 43.

The square root of 38563729 is about 6209.9701287526. The cubic root of 38563729 is about 337.8518806436.

The spelling of 38563729 in words is "thirty-eight million, five hundred sixty-three thousand, seven hundred twenty-nine".