80285869 has 4 divisors (see below), whose sum is σ = 80524444. Its totient is φ = 80047296.

The previous prime is 80285867. The next prime is 80285873. The reversal of 80285869 is 96858208.

It is a happy number.

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 34222500 + 46063369 = 5850^2 + 6787^2 .

It is a cyclic number.

It is not a de Polignac number, because 80285869 - 2¹ = 80285867 is a prime.

It is a super-2 number, since 2×80285869² = 12891641522170322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80285867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118782 + ... + 119455.

It is an arithmetic number, because the mean of its divisors is an integer number (20131111).

Almost surely, 2^80285869 is an apocalyptic number.

It is an amenable number.

80285869 is a deficient number, since it is larger than the sum of its proper divisors (238575).

80285869 is a wasteful number, since it uses less digits than its factorization.

80285869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238574.

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 80285869 is about 8960.2382222796. The cubic root of 80285869 is about 431.3995662968.

The spelling of 80285869 in words is "eighty million, two hundred eighty-five thousand, eight hundred sixty-nine".