87989804 has 12 divisors (see below), whose sum is σ = 175979664. Its totient is φ = 37709904.

The previous prime is 87989723. The next prime is 87989809. The reversal of 87989804 is 40898978.

87989804 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (87989809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1571219 + ... + 1571274.

It is an arithmetic number, because the mean of its divisors is an integer number (14664972).

Almost surely, 2^87989804 is an apocalyptic number.

It is an amenable number.

87989804 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

87989804 is a wasteful number, since it uses less digits than its factorization.

87989804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3142504 (or 3142502 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 53.

The square root of 87989804 is about 9380.2880552785. The cubic root of 87989804 is about 444.7788388890.

The spelling of 87989804 in words is "eighty-seven million, nine hundred eighty-nine thousand, eight hundred four".