285938389 has 16 divisors (see below), whose sum is σ = 323241984. Its totient is φ = 250585200.

The previous prime is 285938383. The next prime is 285938423. The reversal of 285938389 is 983839582.

It is a cyclic number.

It is not a de Polignac number, because 285938389 - 2⁵ = 285938357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285938383) 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, 95022 + ... + 97984.

It is an arithmetic number, because the mean of its divisors is an integer number (20202624).

Almost surely, 2^285938389 is an apocalyptic number.

It is an amenable number.

285938389 is a deficient number, since it is larger than the sum of its proper divisors (37303595).

285938389 is a wasteful number, since it uses less digits than its factorization.

285938389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3288.

The product of its digits is 3732480, while the sum is 55.

The square root of 285938389 is about 16909.7128597738. The cubic root of 285938389 is about 658.8059133253.

The spelling of 285938389 in words is "two hundred eighty-five million, nine hundred thirty-eight thousand, three hundred eighty-nine".