39979578158 has 8 divisors (see below), whose sum is σ = 64582395528. Its totient is φ = 18452112984.

The previous prime is 39979578157. The next prime is 39979578179. The reversal of 39979578158 is 85187597993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 39979578091 and 39979578100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39979578157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 768838016 + ... + 768838067.

It is an arithmetic number, because the mean of its divisors is an integer number (8072799441).

Almost surely, 2^39979578158 is an apocalyptic number.

39979578158 is a deficient number, since it is larger than the sum of its proper divisors (24602817370).

39979578158 is a wasteful number, since it uses less digits than its factorization.

39979578158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537676098.

The product of its digits is 171460800, while the sum is 71.

The spelling of 39979578158 in words is "thirty-nine billion, nine hundred seventy-nine million, five hundred seventy-eight thousand, one hundred fifty-eight".