286879949 has 4 divisors (see below), whose sum is σ = 287314620. Its totient is φ = 286445280.

The previous prime is 286879939. The next prime is 286879951. The reversal of 286879949 is 949978682.

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

It can be written as a sum of positive squares in 2 ways, for example, as 142038724 + 144841225 = 11918^2 + 12035^2 .

It is a cyclic number.

It is not a de Polignac number, because 286879949 - 2⁴ = 286879933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 286879891 and 286879900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286879939) 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, 216344 + ... + 217665.

It is an arithmetic number, because the mean of its divisors is an integer number (71828655).

Almost surely, 2^286879949 is an apocalyptic number.

It is an amenable number.

286879949 is a deficient number, since it is larger than the sum of its proper divisors (434671).

286879949 is an equidigital number, since it uses as much as digits as its factorization.

286879949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434670.

The product of its digits is 15676416, while the sum is 62.

The square root of 286879949 is about 16937.5307822599. The cubic root of 286879949 is about 659.5282433788.

The spelling of 286879949 in words is "two hundred eighty-six million, eight hundred seventy-nine thousand, nine hundred forty-nine".