39649022782009 has 3 divisors (see below), whose sum is σ = 39649029078757. Its totient is φ = 39649016485262.

The previous prime is 39649022781989. The next prime is 39649022782021. The reversal of 39649022782009 is 90028722094693.

The square root of 39649022782009 is 6296747.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 39649022782009 - 2⁷ = 39649022781881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39649022782049) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3148374 + ... + 9445120.

Almost surely, 2^{39649022782009} is an apocalyptic number.

39649022782009 is the 6296747-th square number.

39649022782009 is the 3148374-th centered octagonal number.

It is an amenable number.

39649022782009 is a deficient number, since it is larger than the sum of its proper divisors (6296748).

39649022782009 is an frugal number, since it uses more digits than its factorization.

39649022782009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12593494 (or 6296747 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 61.

The spelling of 39649022782009 in words is "thirty-nine trillion, six hundred forty-nine billion, twenty-two million, seven hundred eighty-two thousand, nine".