87169239 has 12 divisors (see below), whose sum is σ = 128982672. Its totient is φ = 56695200.

The previous prime is 87169237. The next prime is 87169267. The reversal of 87169239 is 93296178.

It is not a de Polignac number, because 87169239 - 2¹ = 87169237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87169194 and 87169203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87169231) 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 11 ways as a sum of consecutive naturals, for example, 117747 + ... + 118484.

It is an arithmetic number, because the mean of its divisors is an integer number (10748556).

Almost surely, 2^87169239 is an apocalyptic number.

87169239 is a deficient number, since it is larger than the sum of its proper divisors (41813433).

87169239 is a wasteful number, since it uses less digits than its factorization.

87169239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236278 (or 236275 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 87169239 is about 9336.4468080743. The cubic root of 87169239 is about 443.3918963974.

It can be divided in two parts, 8716 and 9239, that added together give a triangular number (17955 = T₁₈₉).

The spelling of 87169239 in words is "eighty-seven million, one hundred sixty-nine thousand, two hundred thirty-nine".