39516641 has 8 divisors (see below), whose sum is σ = 40371264. Its totient is φ = 38666160.

The previous prime is 39516611. The next prime is 39516643. The reversal of 39516641 is 14661593.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39516641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39516643) 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, 25046 + ... + 26576.

It is an arithmetic number, because the mean of its divisors is an integer number (5046408).

Almost surely, 2^39516641 is an apocalyptic number.

It is an amenable number.

39516641 is a deficient number, since it is larger than the sum of its proper divisors (854623).

39516641 is a wasteful number, since it uses less digits than its factorization.

39516641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2071.

The product of its digits is 19440, while the sum is 35.

The square root of 39516641 is about 6286.2262924588. The cubic root of 39516641 is about 340.6120492341.

The spelling of 39516641 in words is "thirty-nine million, five hundred sixteen thousand, six hundred forty-one".