285341979 has 16 divisors (see below), whose sum is σ = 427537152. Its totient is φ = 167959968.

The previous prime is 285341963. The next prime is 285341989. The reversal of 285341979 is 979143582.

It is not a de Polignac number, because 285341979 - 2⁴ = 285341963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (285341909) 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 15 ways as a sum of consecutive naturals, for example, 158157 + ... + 159950.

It is an arithmetic number, because the mean of its divisors is an integer number (26721072).

Almost surely, 2^285341979 is an apocalyptic number.

285341979 is a deficient number, since it is larger than the sum of its proper divisors (142195173).

285341979 is a wasteful number, since it uses less digits than its factorization.

285341979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318146.

The product of its digits is 544320, while the sum is 48.

The square root of 285341979 is about 16892.0685234225. The cubic root of 285341979 is about 658.3475489248.

The spelling of 285341979 in words is "two hundred eighty-five million, three hundred forty-one thousand, nine hundred seventy-nine".