285298989 has 8 divisors (see below), whose sum is σ = 380647680. Its totient is φ = 190074816.

The previous prime is 285298961. The next prime is 285298999. The reversal of 285298989 is 989892582.

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

It is not a de Polignac number, because 285298989 - 2⁷ = 285298861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285298939) 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, 25644 + ... + 35045.

It is an arithmetic number, because the mean of its divisors is an integer number (47580960).

Almost surely, 2^285298989 is an apocalyptic number.

It is an amenable number.

285298989 is a deficient number, since it is larger than the sum of its proper divisors (95348691).

285298989 is a wasteful number, since it uses less digits than its factorization.

285298989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62259.

The product of its digits is 7464960, while the sum is 60.

The square root of 285298989 is about 16890.7959847960. The cubic root of 285298989 is about 658.3144847601.

The spelling of 285298989 in words is "two hundred eighty-five million, two hundred ninety-eight thousand, nine hundred eighty-nine".