87489470 has 32 divisors (see below), whose sum is σ = 166344192. Its totient is φ = 33063712.

The previous prime is 87489469. The next prime is 87489503. The reversal of 87489470 is 7498478.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16799 + ... + 21381.

It is an arithmetic number, because the mean of its divisors is an integer number (5198256).

Almost surely, 2^87489470 is an apocalyptic number.

87489470 is a deficient number, since it is larger than the sum of its proper divisors (78854722).

87489470 is a wasteful number, since it uses less digits than its factorization.

87489470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4696.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 87489470 is about 9353.5805978246. The cubic root of 87489470 is about 443.9341913395.

The spelling of 87489470 in words is "eighty-seven million, four hundred eighty-nine thousand, four hundred seventy".