289435998 has 16 divisors (see below), whose sum is σ = 579039120. Its totient is φ = 96450816.

The previous prime is 289435997. The next prime is 289436029. The reversal of 289435998 is 899534982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289435997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35086 + ... + 42542.

It is an arithmetic number, because the mean of its divisors is an integer number (36189945).

Almost surely, 2^289435998 is an apocalyptic number.

289435998 is an abundant number, since it is smaller than the sum of its proper divisors (289603122).

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

289435998 is a wasteful number, since it uses less digits than its factorization.

289435998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13931.

The product of its digits is 5598720, while the sum is 57.

The square root of 289435998 is about 17012.8186377214. The cubic root of 289435998 is about 661.4812141410.

The spelling of 289435998 in words is "two hundred eighty-nine million, four hundred thirty-five thousand, nine hundred ninety-eight".