899979979998 has 32 divisors (see below), whose sum is σ = 2026934387712. Its totient is φ = 263923747200.

The previous prime is 899979979993. The next prime is 899979979999.

It is a happy number.

899979979998 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899979979993) 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 15 ways as a sum of consecutive naturals, for example, 219934411 + ... + 219938502.

It is an arithmetic number, because the mean of its divisors is an integer number (63341699616).

Almost surely, 2^899979979998 is an apocalyptic number.

899979979998 is an abundant number, since it is smaller than the sum of its proper divisors (1126954407714).

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

899979979998 is a wasteful number, since it uses less digits than its factorization.

899979979998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439872960.

The product of its digits is 134994517056, while the sum is 102.

It can be divided in two parts, 8999 and 79979998, that added together give a palindrome (79988997).

The spelling of 899979979998 in words is "eight hundred ninety-nine billion, nine hundred seventy-nine million, nine hundred seventy-nine thousand, nine hundred ninety-eight".