38239913 has 8 divisors (see below), whose sum is σ = 40653120. Its totient is φ = 35866800.

The previous prime is 38239897. The next prime is 38239931. The reversal of 38239913 is 31993283.

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

It is a cyclic number.

It is not a de Polignac number, because 38239913 - 2⁴ = 38239897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38239813) 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, 8045 + ... + 11882.

It is an arithmetic number, because the mean of its divisors is an integer number (5081640).

Almost surely, 2^38239913 is an apocalyptic number.

It is an amenable number.

38239913 is a deficient number, since it is larger than the sum of its proper divisors (2413207).

38239913 is a wasteful number, since it uses less digits than its factorization.

38239913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20047.

The product of its digits is 34992, while the sum is 38.

The square root of 38239913 is about 6183.8428990394. The cubic root of 38239913 is about 336.9035846129.

The spelling of 38239913 in words is "thirty-eight million, two hundred thirty-nine thousand, nine hundred thirteen".