38939009 has 8 divisors (see below), whose sum is σ = 39418920. Its totient is φ = 38461696.

The previous prime is 38938987. The next prime is 38939011. The reversal of 38939009 is 90093983.

It can be written as a sum of positive squares in 4 ways, for example, as 12054784 + 26884225 = 3472^2 + 5185^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38939009 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38939039) 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, 57179 + ... + 57855.

It is an arithmetic number, because the mean of its divisors is an integer number (4927365).

Almost surely, 2^38939009 is an apocalyptic number.

It is an amenable number.

38939009 is a deficient number, since it is larger than the sum of its proper divisors (479911).

38939009 is a wasteful number, since it uses less digits than its factorization.

38939009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 38939009 is about 6240.1128996197. The cubic root of 38939009 is about 338.9442714030.

The spelling of 38939009 in words is "thirty-eight million, nine hundred thirty-nine thousand, nine".