87489906 has 32 divisors (see below), whose sum is σ = 201149568. Its totient is φ = 24850560.

The previous prime is 87489881. The next prime is 87489917. The reversal of 87489906 is 60998478.

It is a happy 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 in 15 ways as a sum of consecutive naturals, for example, 1246 + ... + 13286.

It is an arithmetic number, because the mean of its divisors is an integer number (6285924).

Almost surely, 2^87489906 is an apocalyptic number.

87489906 is an abundant number, since it is smaller than the sum of its proper divisors (113659662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87489906 is a wasteful number, since it uses less digits than its factorization.

87489906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12226.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 87489906 is about 9353.6039043782. The cubic root of 87489906 is about 443.9349287805.

The spelling of 87489906 in words is "eighty-seven million, four hundred eighty-nine thousand, nine hundred six".