87284539 has 4 divisors (see below), whose sum is σ = 89314456. Its totient is φ = 85254624.

The previous prime is 87284507. The next prime is 87284557. The reversal of 87284539 is 93548278.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93548278 = 2 ⋅46774139.

It is a cyclic number.

It is not a de Polignac number, because 87284539 - 2⁵ = 87284507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87284599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1014894 + ... + 1014979.

It is an arithmetic number, because the mean of its divisors is an integer number (22328614).

Almost surely, 2^87284539 is an apocalyptic number.

87284539 is a deficient number, since it is larger than the sum of its proper divisors (2029917).

87284539 is a wasteful number, since it uses less digits than its factorization.

87284539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2029916.

The product of its digits is 483840, while the sum is 46.

The square root of 87284539 is about 9342.6194934825. The cubic root of 87284539 is about 443.5873038690.

The spelling of 87284539 in words is "eighty-seven million, two hundred eighty-four thousand, five hundred thirty-nine".