39954658836 has 12 divisors (see below), whose sum is σ = 93227537312. Its totient is φ = 13318219608.

The previous prime is 39954658829. The next prime is 39954658837. The reversal of 39954658836 is 63885645993.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39954658837) 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 3 ways as a sum of consecutive naturals, for example, 1664777440 + ... + 1664777463.

Almost surely, 2^39954658836 is an apocalyptic number.

It is an amenable number.

39954658836 is an abundant number, since it is smaller than the sum of its proper divisors (53272878476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39954658836 is a wasteful number, since it uses less digits than its factorization.

39954658836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3329554910 (or 3329554908 counting only the distinct ones).

The product of its digits is 167961600, while the sum is 66.

The spelling of 39954658836 in words is "thirty-nine billion, nine hundred fifty-four million, six hundred fifty-eight thousand, eight hundred thirty-six".