289698985 has 8 divisors (see below), whose sum is σ = 365935680. Its totient is φ = 219561264.

The previous prime is 289698977. The next prime is 289699013. The reversal of 289698985 is 589896982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 289698985 - 2³ = 289698977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1524637 + ... + 1524826.

It is an arithmetic number, because the mean of its divisors is an integer number (45741960).

Almost surely, 2^289698985 is an apocalyptic number.

It is an amenable number.

289698985 is a deficient number, since it is larger than the sum of its proper divisors (76236695).

289698985 is a wasteful number, since it uses less digits than its factorization.

289698985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3049487.

The product of its digits is 22394880, while the sum is 64.

The square root of 289698985 is about 17020.5459665664. The cubic root of 289698985 is about 661.6814982565.

The spelling of 289698985 in words is "two hundred eighty-nine million, six hundred ninety-eight thousand, nine hundred eighty-five".