39353834649 has 16 divisors (see below), whose sum is σ = 54594936000. Its totient is φ = 25184771136.

The previous prime is 39353834623. The next prime is 39353834671. The reversal of 39353834649 is 94643835393.

It is not a de Polignac number, because 39353834649 - 2⁵ = 39353834617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39353834609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1292299 + ... + 1322400.

It is an arithmetic number, because the mean of its divisors is an integer number (3412183500).

Almost surely, 2^39353834649 is an apocalyptic number.

It is an amenable number.

39353834649 is a deficient number, since it is larger than the sum of its proper divisors (15241101351).

39353834649 is a wasteful number, since it uses less digits than its factorization.

39353834649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2614904.

The product of its digits is 25194240, while the sum is 57.

The spelling of 39353834649 in words is "thirty-nine billion, three hundred fifty-three million, eight hundred thirty-four thousand, six hundred forty-nine".