39979578159 has 40 divisors (see below), whose sum is σ = 60053587440. Its totient is φ = 26615195136.

The previous prime is 39979578157. The next prime is 39979578179. The reversal of 39979578159 is 95187597993.

39979578159 is a `hidden beast` number, since 39 + 9 + 7 + 9 + 578 + 15 + 9 = 666.

It is not a de Polignac number, because 39979578159 - 2¹ = 39979578157 is a prime.

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 polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 23953377 + ... + 23955045.

It is an arithmetic number, because the mean of its divisors is an integer number (1501339686).

Almost surely, 2^39979578159 is an apocalyptic number.

39979578159 is a deficient number, since it is larger than the sum of its proper divisors (20074009281).

39979578159 is an frugal number, since it uses more digits than its factorization.

39979578159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2913 (or 2889 counting only the distinct ones).

The product of its digits is 192893400, while the sum is 72.

The spelling of 39979578159 in words is "thirty-nine billion, nine hundred seventy-nine million, five hundred seventy-eight thousand, one hundred fifty-nine".