285029109 has 12 divisors (see below), whose sum is σ = 413866752. Its totient is φ = 189023400.

The previous prime is 285029099. The next prime is 285029131. The reversal of 285029109 is 901920582.

It is not a de Polignac number, because 285029109 - 2⁷ = 285028981 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285029309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81187 + ... + 84624.

It is an arithmetic number, because the mean of its divisors is an integer number (34488896).

Almost surely, 2^285029109 is an apocalyptic number.

It is an amenable number.

285029109 is a deficient number, since it is larger than the sum of its proper divisors (128837643).

285029109 is a wasteful number, since it uses less digits than its factorization.

285029109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166008 (or 166005 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 285029109 is about 16882.8051282955. The cubic root of 285029109 is about 658.1068406501.

The spelling of 285029109 in words is "two hundred eighty-five million, twenty-nine thousand, one hundred nine".