39008661 has 4 divisors (see below), whose sum is σ = 52011552. Its totient is φ = 26005772.

The previous prime is 39008657. The next prime is 39008687. The reversal of 39008661 is 16680093.

39008661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16680093 = 3 ⋅5560031.

It is a cyclic number.

It is not a de Polignac number, because 39008661 - 2² = 39008657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39008461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6501441 + ... + 6501446.

It is an arithmetic number, because the mean of its divisors is an integer number (13002888).

Almost surely, 2^39008661 is an apocalyptic number.

It is an amenable number.

39008661 is a deficient number, since it is larger than the sum of its proper divisors (13002891).

39008661 is a wasteful number, since it uses less digits than its factorization.

39008661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13002890.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 39008661 is about 6245.6913948737. The cubic root of 39008661 is about 339.1462461034.

It can be divided in two parts, 3900 and 8661, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 39008661 in words is "thirty-nine million, eight thousand, six hundred sixty-one".