289999999900 has 36 divisors (see below), whose sum is σ = 677707695112. Its totient is φ = 107076922560.

The previous prime is 289999999897. The next prime is 289999999903. The reversal of 289999999900 is 9999999982.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (289999999897) and next prime (289999999903).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289999999903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111537162 + ... + 111539761.

Almost surely, 2^289999999900 is an apocalyptic number.

289999999900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289999999900 is an abundant number, since it is smaller than the sum of its proper divisors (387707695212).

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

289999999900 is a wasteful number, since it uses less digits than its factorization.

289999999900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223076950 (or 223076943 counting only the distinct ones).

The product of its (nonzero) digits is 688747536, while the sum is 82.

Adding to 289999999900 its sum of digits (82), we get a palindrome (289999999982).

The spelling of 289999999900 in words is "two hundred eighty-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred".