289999998 has 24 divisors (see below), whose sum is σ = 642947448. Its totient is φ = 94418352.

The previous prime is 289999993. The next prime is 289999999. The reversal of 289999998 is 899999982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289999993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186565 + ... + 188112.

It is an arithmetic number, because the mean of its divisors is an integer number (26789477).

Almost surely, 2^289999998 is an apocalyptic number.

289999998 is an abundant number, since it is smaller than the sum of its proper divisors (352947450).

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

289999998 is a wasteful number, since it uses less digits than its factorization.

289999998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374728 (or 374725 counting only the distinct ones).

The product of its digits is 68024448, while the sum is 72.

The square root of 289999998 is about 17029.3863072044. The cubic root of 289999998 is about 661.9105932810.

The spelling of 289999998 in words is "two hundred eighty-nine million, nine hundred ninety-nine thousand, nine hundred ninety-eight".