285954389 has 16 divisors (see below), whose sum is σ = 353308800. Its totient is φ = 225923904.

The previous prime is 285954379. The next prime is 285954407. The reversal of 285954389 is 983459582.

It is a cyclic number.

It is not a de Polignac number, because 285954389 - 2¹⁶ = 285888853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 285954389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285954329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24134 + ... + 33975.

It is an arithmetic number, because the mean of its divisors is an integer number (22081800).

Almost surely, 2^285954389 is an apocalyptic number.

It is an amenable number.

285954389 is a deficient number, since it is larger than the sum of its proper divisors (67354411).

285954389 is a wasteful number, since it uses less digits than its factorization.

285954389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58172.

The product of its digits is 3110400, while the sum is 53.

The square root of 285954389 is about 16910.1859540337. The cubic root of 285954389 is about 658.8182011682.

The spelling of 285954389 in words is "two hundred eighty-five million, nine hundred fifty-four thousand, three hundred eighty-nine".