38809930 has 16 divisors (see below), whose sum is σ = 70410240. Its totient is φ = 15401232.

The previous prime is 38809919. The next prime is 38809937. The reversal of 38809930 is 3990883.

It is not an unprimeable number, because it can be changed into a prime (38809937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14010 + ... + 16549.

It is an arithmetic number, because the mean of its divisors is an integer number (4400640).

Almost surely, 2^38809930 is an apocalyptic number.

38809930 is a deficient number, since it is larger than the sum of its proper divisors (31600310).

38809930 is a wasteful number, since it uses less digits than its factorization.

38809930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30693.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 38809930 is about 6229.7616326791. The cubic root of 38809930 is about 338.5693344530.

It can be divided in two parts, 388099 and 30, that added together give a square (388129 = 623²).

The spelling of 38809930 in words is "thirty-eight million, eight hundred nine thousand, nine hundred thirty".