38931853 has 8 divisors (see below), whose sum is σ = 41281272. Its totient is φ = 36589056.

The previous prime is 38931811. The next prime is 38931859. The reversal of 38931853 is 35813983.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17197609 + 21734244 = 4147^2 + 4662^2 .

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 38931853 - 2¹⁷ = 38800781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38931859) 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, 15801 + ... + 18097.

It is an arithmetic number, because the mean of its divisors is an integer number (5160159).

Almost surely, 2^38931853 is an apocalyptic number.

It is an amenable number.

38931853 is a deficient number, since it is larger than the sum of its proper divisors (2349419).

38931853 is a wasteful number, since it uses less digits than its factorization.

38931853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3311.

The product of its digits is 77760, while the sum is 40.

The square root of 38931853 is about 6239.5394862121. The cubic root of 38931853 is about 338.9235070173.

The spelling of 38931853 in words is "thirty-eight million, nine hundred thirty-one thousand, eight hundred fifty-three".