289999999998 has 48 divisors (see below), whose sum is σ = 633294934272. Its totient is φ = 95903730000.

The previous prime is 289999999987. The next prime is 290000000023. The reversal of 289999999998 is 899999999982.

It is a junction number, because it is equal to n+sod(n) for n = 289999999899 and 289999999908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10481643 + ... + 10509273.

It is an arithmetic number, because the mean of its divisors is an integer number (13193644464).

Almost surely, 2^289999999998 is an apocalyptic number.

289999999998 is an abundant number, since it is smaller than the sum of its proper divisors (343294934274).

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

289999999998 is a wasteful number, since it uses less digits than its factorization.

289999999998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32221 (or 32218 counting only the distinct ones).

The product of its digits is 49589822592, while the sum is 99.

It can be divided in two parts, 2 and 89999999998, that added together give a square (90000000000 = 300000²).

The spelling of 289999999998 in words is "two hundred eighty-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-eight".