87849239 has 4 divisors (see below), whose sum is σ = 87884160. Its totient is φ = 87814320.

The previous prime is 87849221. The next prime is 87849241. The reversal of 87849239 is 93294878.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 87849239 - 2¹² = 87845143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87849269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13367 + ... + 18824.

It is an arithmetic number, because the mean of its divisors is an integer number (21971040).

Almost surely, 2^87849239 is an apocalyptic number.

87849239 is a deficient number, since it is larger than the sum of its proper divisors (34921).

87849239 is a wasteful number, since it uses less digits than its factorization.

87849239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34920.

The product of its digits is 870912, while the sum is 50.

The square root of 87849239 is about 9372.7924867672. The cubic root of 87849239 is about 444.5418657527.

It can be divided in two parts, 87849 and 239, that added together give a palindrome (88088).

The spelling of 87849239 in words is "eighty-seven million, eight hundred forty-nine thousand, two hundred thirty-nine".