285877229 has 4 divisors (see below), whose sum is σ = 311866080. Its totient is φ = 259888380.

The previous prime is 285877223. The next prime is 285877247. The reversal of 285877229 is 922778582.

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 not a de Polignac number, because 285877229 - 2⁴ = 285877213 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 (285877223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12994409 + ... + 12994430.

It is an arithmetic number, because the mean of its divisors is an integer number (77966520).

Almost surely, 2^285877229 is an apocalyptic number.

It is an amenable number.

285877229 is a deficient number, since it is larger than the sum of its proper divisors (25988851).

285877229 is a wasteful number, since it uses less digits than its factorization.

285877229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25988850.

The product of its digits is 1128960, while the sum is 50.

The square root of 285877229 is about 16907.9043349553. The cubic root of 285877229 is about 658.7589388204.

The spelling of 285877229 in words is "two hundred eighty-five million, eight hundred seventy-seven thousand, two hundred twenty-nine".