39143889644 has 12 divisors (see below), whose sum is σ = 68636391600. Its totient is φ = 19533492048.

The previous prime is 39143889643. The next prime is 39143889679. The reversal of 39143889644 is 44698834193.

It is a hoax number, since the sum of its digits (59) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (39143889641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9610904 + ... + 9614975.

It is an arithmetic number, because the mean of its divisors is an integer number (5719699300).

Almost surely, 2^39143889644 is an apocalyptic number.

It is an amenable number.

39143889644 is a deficient number, since it is larger than the sum of its proper divisors (29492501956).

39143889644 is a wasteful number, since it uses less digits than its factorization.

39143889644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19226392 (or 19226390 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 59.

The spelling of 39143889644 in words is "thirty-nine billion, one hundred forty-three million, eight hundred eighty-nine thousand, six hundred forty-four".