39954659078 has 24 divisors (see below), whose sum is σ = 60436441872. Its totient is φ = 19810369904.

The previous prime is 39954659057. The next prime is 39954659083. The reversal of 39954659078 is 87095645993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32668775 + ... + 32669997.

It is an arithmetic number, because the mean of its divisors is an integer number (2518185078).

Almost surely, 2^39954659078 is an apocalyptic number.

39954659078 is a deficient number, since it is larger than the sum of its proper divisors (20481782794).

39954659078 is a wasteful number, since it uses less digits than its factorization.

39954659078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996 (or 1769 counting only the distinct ones).

The product of its (nonzero) digits is 73483200, while the sum is 65.

The spelling of 39954659078 in words is "thirty-nine billion, nine hundred fifty-four million, six hundred fifty-nine thousand, seventy-eight".