38645329 has 4 divisors (see below), whose sum is σ = 39587940. Its totient is φ = 37702720.

The previous prime is 38645317. The next prime is 38645333. The reversal of 38645329 is 92354683.

38645329 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: 92354683 = 23 ⋅4015421.

It can be written as a sum of positive squares in 2 ways, for example, as 490000 + 38155329 = 700^2 + 6177^2 .

It is a cyclic number.

It is not a de Polignac number, because 38645329 - 2¹⁷ = 38514257 is a prime.

It is a super-2 number, since 2×38645329² = 2986922907036482, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38645291 and 38645300.

It is not an unprimeable number, because it can be changed into a prime (38646329) 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, 471244 + ... + 471325.

It is an arithmetic number, because the mean of its divisors is an integer number (9896985).

Almost surely, 2^38645329 is an apocalyptic number.

It is an amenable number.

38645329 is a deficient number, since it is larger than the sum of its proper divisors (942611).

38645329 is an equidigital number, since it uses as much as digits as its factorization.

38645329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942610.

The product of its digits is 155520, while the sum is 40.

The square root of 38645329 is about 6216.5367368013. The cubic root of 38645329 is about 338.0900084740.

The spelling of 38645329 in words is "thirty-eight million, six hundred forty-five thousand, three hundred twenty-nine".