87000404 has 6 divisors (see below), whose sum is σ = 152250714. Its totient is φ = 43500200.

The previous prime is 87000391. The next prime is 87000413. The reversal of 87000404 is 40400078.

It can be written as a sum of positive squares in only one way, i.e., 86452804 + 547600 = 9298^2 + 740^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 87000404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10875047 + ... + 10875054.

It is an arithmetic number, because the mean of its divisors is an integer number (25375119).

Almost surely, 2^87000404 is an apocalyptic number.

It is an amenable number.

87000404 is a deficient number, since it is larger than the sum of its proper divisors (65250310).

87000404 is a wasteful number, since it uses less digits than its factorization.

87000404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21750105 (or 21750103 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 87000404 is about 9327.4007097369. The cubic root of 87000404 is about 443.1054480469.

The spelling of 87000404 in words is "eighty-seven million, four hundred four", and thus it is an aban number.