38965985 has 4 divisors (see below), whose sum is σ = 46759188. Its totient is φ = 31172784.

The previous prime is 38965963. The next prime is 38966021. The reversal of 38965985 is 58956983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58956983 = 2671 ⋅22073.

It can be written as a sum of positive squares in 2 ways, for example, as 25120144 + 13845841 = 5012^2 + 3721^2 .

It is a cyclic number.

It is not a de Polignac number, because 38965985 - 2²⁴ = 22188769 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 3896594 + ... + 3896603.

It is an arithmetic number, because the mean of its divisors is an integer number (11689797).

Almost surely, 2^38965985 is an apocalyptic number.

It is an amenable number.

38965985 is a deficient number, since it is larger than the sum of its proper divisors (7793203).

38965985 is an equidigital number, since it uses as much as digits as its factorization.

38965985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7793202.

The product of its digits is 2332800, while the sum is 53.

The square root of 38965985 is about 6242.2740247445. The cubic root of 38965985 is about 339.0225241224.

The spelling of 38965985 in words is "thirty-eight million, nine hundred sixty-five thousand, nine hundred eighty-five".