285212849 has 4 divisors (see below), whose sum is σ = 287264880. Its totient is φ = 283160820.

The previous prime is 285212839. The next prime is 285212861. The reversal of 285212849 is 948212582.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285212849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285212839) 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, 1025807 + ... + 1026084.

It is an arithmetic number, because the mean of its divisors is an integer number (71816220).

Almost surely, 2^285212849 is an apocalyptic number.

It is an amenable number.

285212849 is a deficient number, since it is larger than the sum of its proper divisors (2052031).

285212849 is a wasteful number, since it uses less digits than its factorization.

285212849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052030.

The product of its digits is 92160, while the sum is 41.

The square root of 285212849 is about 16888.2458828618. The cubic root of 285212849 is about 658.2482233758.

The spelling of 285212849 in words is "two hundred eighty-five million, two hundred twelve thousand, eight hundred forty-nine".