87987134 has 4 divisors (see below), whose sum is σ = 131980704. Its totient is φ = 43993566.

The previous prime is 87987127. The next prime is 87987143. The reversal of 87987134 is 43178978.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 21996782 + ... + 21996785.

It is an arithmetic number, because the mean of its divisors is an integer number (32995176).

Almost surely, 2^87987134 is an apocalyptic number.

87987134 is a deficient number, since it is larger than the sum of its proper divisors (43993570).

87987134 is a wasteful number, since it uses less digits than its factorization.

87987134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43993569.

The product of its digits is 338688, while the sum is 47.

The square root of 87987134 is about 9380.1457344756. The cubic root of 87987134 is about 444.7743399908.

The spelling of 87987134 in words is "eighty-seven million, nine hundred eighty-seven thousand, one hundred thirty-four".