229978989979 has 16 divisors (see below), whose sum is σ = 235006358400. Its totient is φ = 225003804480.

The previous prime is 229978989941. The next prime is 229978990009. The reversal of 229978989979 is 979989879922.

It is a cyclic number.

It is not a de Polignac number, because 229978989979 - 2¹³ = 229978981787 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 229978989979.

It is not an unprimeable number, because it can be changed into a prime (229978989179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39195804 + ... + 39201670.

It is an arithmetic number, because the mean of its divisors is an integer number (14687897400).

Almost surely, 2^229978989979 is an apocalyptic number.

229978989979 is a deficient number, since it is larger than the sum of its proper divisors (5027368421).

229978989979 is a wasteful number, since it uses less digits than its factorization.

229978989979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10170.

The product of its digits is 6666395904, while the sum is 88.

The spelling of 229978989979 in words is "two hundred twenty-nine billion, nine hundred seventy-eight million, nine hundred eighty-nine thousand, nine hundred seventy-nine".