38505539 has 4 divisors (see below), whose sum is σ = 38655624. Its totient is φ = 38355456.

The previous prime is 38505521. The next prime is 38505553. The reversal of 38505539 is 93550583.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38505539 - 2¹² = 38501443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38505569) 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 3 ways as a sum of consecutive naturals, for example, 74657 + ... + 75170.

It is an arithmetic number, because the mean of its divisors is an integer number (9663906).

Almost surely, 2^38505539 is an apocalyptic number.

38505539 is a deficient number, since it is larger than the sum of its proper divisors (150085).

38505539 is a wasteful number, since it uses less digits than its factorization.

38505539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150084.

The product of its (nonzero) digits is 81000, while the sum is 38.

The square root of 38505539 is about 6205.2831522824. The cubic root of 38505539 is about 337.6818633928.

The spelling of 38505539 in words is "thirty-eight million, five hundred five thousand, five hundred thirty-nine".