38629809 has 12 divisors (see below), whose sum is σ = 56035200. Its totient is φ = 25644024.

The previous prime is 38629807. The next prime is 38629819. The reversal of 38629809 is 90892683.

38629809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38629809 - 2¹ = 38629807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38629807) 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 11 ways as a sum of consecutive naturals, for example, 6829 + ... + 11130.

It is an arithmetic number, because the mean of its divisors is an integer number (4669600).

Almost surely, 2^38629809 is an apocalyptic number.

It is an amenable number.

38629809 is a deficient number, since it is larger than the sum of its proper divisors (17405391).

38629809 is a wasteful number, since it uses less digits than its factorization.

38629809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18204 (or 18201 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 38629809 is about 6215.2883279861. The cubic root of 38629809 is about 338.0447433269.

The spelling of 38629809 in words is "thirty-eight million, six hundred twenty-nine thousand, eight hundred nine".