39536641 has 4 divisors (see below), whose sum is σ = 39555652. Its totient is φ = 39517632.

The previous prime is 39536603. The next prime is 39536659. The reversal of 39536641 is 14663593.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10214416 + 29322225 = 3196^2 + 5415^2 .

It is a cyclic number.

It is not a de Polignac number, because 39536641 - 2⁷ = 39536513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39536641.

It is not an unprimeable number, because it can be changed into a prime (39536741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5940 + ... + 10693.

It is an arithmetic number, because the mean of its divisors is an integer number (9888913).

Almost surely, 2^39536641 is an apocalyptic number.

It is an amenable number.

39536641 is a deficient number, since it is larger than the sum of its proper divisors (19011).

39536641 is a wasteful number, since it uses less digits than its factorization.

39536641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19010.

The product of its digits is 58320, while the sum is 37.

The square root of 39536641 is about 6287.8168707430. The cubic root of 39536641 is about 340.6695025995.

The spelling of 39536641 in words is "thirty-nine million, five hundred thirty-six thousand, six hundred forty-one".