39085865 has 16 divisors (see below), whose sum is σ = 57727488. Its totient is φ = 24739776.

The previous prime is 39085861. The next prime is 39085883. The reversal of 39085865 is 56858093.

It is a cyclic number.

It is not a de Polignac number, because 39085865 - 2² = 39085861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39085861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42497 + ... + 43406.

It is an arithmetic number, because the mean of its divisors is an integer number (3607968).

Almost surely, 2^39085865 is an apocalyptic number.

39085865 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

39085865 is a deficient number, since it is larger than the sum of its proper divisors (18641623).

39085865 is a wasteful number, since it uses less digits than its factorization.

39085865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85928.

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

The square root of 39085865 is about 6251.8689205709. The cubic root of 39085865 is about 339.3698391160.

The spelling of 39085865 in words is "thirty-nine million, eighty-five thousand, eight hundred sixty-five".