87822869 has 8 divisors (see below), whose sum is σ = 89212032. Its totient is φ = 86438880.

The previous prime is 87822803. The next prime is 87822877. The reversal of 87822869 is 96822878.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87822869 is a prime.

It is a super-2 number, since 2×87822869² = 15425712638782322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87821869) 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 7 ways as a sum of consecutive naturals, for example, 46004 + ... + 47874.

It is an arithmetic number, because the mean of its divisors is an integer number (11151504).

Almost surely, 2^87822869 is an apocalyptic number.

It is an amenable number.

87822869 is a deficient number, since it is larger than the sum of its proper divisors (1389163).

87822869 is a wasteful number, since it uses less digits than its factorization.

87822869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2587.

The product of its digits is 774144, while the sum is 50.

The square root of 87822869 is about 9371.3856499453. The cubic root of 87822869 is about 444.4973814283.

Subtracting 87822869 from its reverse (96822878), we obtain a palindrome (9000009).

The spelling of 87822869 in words is "eighty-seven million, eight hundred twenty-two thousand, eight hundred sixty-nine".