38965659449 has 4 divisors (see below), whose sum is σ = 39060930420. Its totient is φ = 38870388480.

The previous prime is 38965659443. The next prime is 38965659497. The reversal of 38965659449 is 94495656983.

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 34333495849 + 4632163600 = 185293^2 + 68060^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38965659449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38965659443) 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, 47634872 + ... + 47635689.

It is an arithmetic number, because the mean of its divisors is an integer number (9765232605).

Almost surely, 2^38965659449 is an apocalyptic number.

It is an amenable number.

38965659449 is a deficient number, since it is larger than the sum of its proper divisors (95270971).

38965659449 is an equidigital number, since it uses as much as digits as its factorization.

38965659449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95270970.

The product of its digits is 251942400, while the sum is 68.

The spelling of 38965659449 in words is "thirty-eight billion, nine hundred sixty-five million, six hundred fifty-nine thousand, four hundred forty-nine".