39908065 has 8 divisors (see below), whose sum is σ = 48054888. Its totient is φ = 31816320.

The previous prime is 39908053. The next prime is 39908069. The reversal of 39908065 is 56080993.

It can be written as a sum of positive squares in 4 ways, for example, as 26998416 + 12909649 = 5196^2 + 3593^2 .

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

It is not a de Polignac number, because 39908065 - 2⁷ = 39907937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39908069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12156 + ... + 15085.

It is an arithmetic number, because the mean of its divisors is an integer number (6006861).

Almost surely, 2^39908065 is an apocalyptic number.

It is an amenable number.

39908065 is a deficient number, since it is larger than the sum of its proper divisors (8146823).

39908065 is a wasteful number, since it uses less digits than its factorization.

39908065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27539.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 39908065 is about 6317.2830394086. The cubic root of 39908065 is about 341.7329772810.

The spelling of 39908065 in words is "thirty-nine million, nine hundred eight thousand, sixty-five".