38409906 has 16 divisors (see below), whose sum is σ = 80863200. Its totient is φ = 12129408.

The previous prime is 38409901. The next prime is 38409913. The reversal of 38409906 is 60990483.

It is not an unprimeable number, because it can be changed into a prime (38409901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168351 + ... + 168578.

It is an arithmetic number, because the mean of its divisors is an integer number (5053950).

Almost surely, 2^38409906 is an apocalyptic number.

38409906 is an abundant number, since it is smaller than the sum of its proper divisors (42453294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38409906 is a wasteful number, since it uses less digits than its factorization.

38409906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336953.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 38409906 is about 6197.5725893288. The cubic root of 38409906 is about 337.4020741958.

The spelling of 38409906 in words is "thirty-eight million, four hundred nine thousand, nine hundred six".