39603786049 has 9 divisors (see below), whose sum is σ = 40298361123. Its totient is φ = 38920993032.

The previous prime is 39603786037. The next prime is 39603786077. The reversal of 39603786049 is 94068730693.

The square root of 39603786049 is 199007.

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

It can be written as a sum of positive squares in only one way, i.e., 39182223025 + 421563024 = 197945^2 + 20532^2 .

It is not a de Polignac number, because 39603786049 - 2¹⁷ = 39603654977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39603786149) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 11739727 + ... + 11743099.

Almost surely, 2^39603786049 is an apocalyptic number.

39603786049 is the 199007-th square number.

39603786049 is the 99504-th centered octagonal number.

It is an amenable number.

39603786049 is a deficient number, since it is larger than the sum of its proper divisors (694575074).

39603786049 is an frugal number, since it uses more digits than its factorization.

39603786049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6864 (or 3432 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 55.

The spelling of 39603786049 in words is "thirty-nine billion, six hundred three million, seven hundred eighty-six thousand, forty-nine".