289959398 has 4 divisors (see below), whose sum is σ = 434939100. Its totient is φ = 144979698.

The previous prime is 289959379. The next prime is 289959409. The reversal of 289959398 is 893959982.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 289959398.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72489848 + ... + 72489851.

It is an arithmetic number, because the mean of its divisors is an integer number (108734775).

Almost surely, 2^289959398 is an apocalyptic number.

289959398 is a deficient number, since it is larger than the sum of its proper divisors (144979702).

289959398 is a wasteful number, since it uses less digits than its factorization.

289959398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144979701.

The product of its digits is 12597120, while the sum is 62.

The square root of 289959398 is about 17028.1942084297. The cubic root of 289959398 is about 661.8797026782.

The spelling of 289959398 in words is "two hundred eighty-nine million, nine hundred fifty-nine thousand, three hundred ninety-eight".