87905444 has 12 divisors (see below), whose sum is σ = 167819568. Its totient is φ = 39957000.

The previous prime is 87905443. The next prime is 87905449. The reversal of 87905444 is 44450978.

It is not an unprimeable number, because it can be changed into a prime (87905443) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 998882 + ... + 998969.

It is an arithmetic number, because the mean of its divisors is an integer number (13984964).

Almost surely, 2^87905444 is an apocalyptic number.

It is an amenable number.

87905444 is a deficient number, since it is larger than the sum of its proper divisors (79914124).

87905444 is a wasteful number, since it uses less digits than its factorization.

87905444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997866 (or 1997864 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 87905444 is about 9375.7903133549. The cubic root of 87905444 is about 444.6366499127.

The spelling of 87905444 in words is "eighty-seven million, nine hundred five thousand, four hundred forty-four".