87489212 has 24 divisors (see below), whose sum is σ = 156265200. Its totient is φ = 42847616.

The previous prime is 87489211. The next prime is 87489229. The reversal of 87489212 is 21298478.

It is a self number, because there is not a number n which added to its sum of digits gives 87489212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87489211) 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 7 ways as a sum of consecutive naturals, for example, 91328 + ... + 92280.

It is an arithmetic number, because the mean of its divisors is an integer number (6511050).

Almost surely, 2^87489212 is an apocalyptic number.

It is an amenable number.

87489212 is a deficient number, since it is larger than the sum of its proper divisors (68775988).

87489212 is a wasteful number, since it uses less digits than its factorization.

87489212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405 (or 1403 counting only the distinct ones).

The product of its digits is 64512, while the sum is 41.

The square root of 87489212 is about 9353.5668063044. The cubic root of 87489212 is about 443.9337549626.

The spelling of 87489212 in words is "eighty-seven million, four hundred eighty-nine thousand, two hundred twelve".