285459947 has 4 divisors (see below), whose sum is σ = 287169456. Its totient is φ = 283750440.

The previous prime is 285459919. The next prime is 285459953. The reversal of 285459947 is 749954582.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 285459947 - 2⁶ = 285459883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285459047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 854504 + ... + 854837.

It is an arithmetic number, because the mean of its divisors is an integer number (71792364).

Almost surely, 2^285459947 is an apocalyptic number.

285459947 is a deficient number, since it is larger than the sum of its proper divisors (1709509).

285459947 is a wasteful number, since it uses less digits than its factorization.

285459947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1709508.

The product of its digits is 3628800, while the sum is 53.

The square root of 285459947 is about 16895.5599788820. The cubic root of 285459947 is about 658.4382625819.

The spelling of 285459947 in words is "two hundred eighty-five million, four hundred fifty-nine thousand, nine hundred forty-seven".