38986505 has 8 divisors (see below), whose sum is σ = 47247624. Its totient is φ = 30880000.

The previous prime is 38986483. The next prime is 38986543. The reversal of 38986505 is 50568983.

It can be written as a sum of positive squares in 4 ways, for example, as 3892729 + 35093776 = 1973^2 + 5924^2 .

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

It is not a de Polignac number, because 38986505 - 2¹⁰ = 38985481 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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, 38096 + ... + 39105.

It is an arithmetic number, because the mean of its divisors is an integer number (5905953).

Almost surely, 2^38986505 is an apocalyptic number.

It is an amenable number.

38986505 is a deficient number, since it is larger than the sum of its proper divisors (8261119).

38986505 is a wasteful number, since it uses less digits than its factorization.

38986505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77307.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 38986505 is about 6243.9174401973. The cubic root of 38986505 is about 339.0820249185.

The spelling of 38986505 in words is "thirty-eight million, nine hundred eighty-six thousand, five hundred five".