87755444 has 12 divisors (see below), whose sum is σ = 175510944. Its totient is φ = 37609464.

The previous prime is 87755407. The next prime is 87755467. The reversal of 87755444 is 44455778.

87755444 is an admirable number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 87755395 and 87755404.

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 in 3 ways as a sum of consecutive naturals, for example, 1567034 + ... + 1567089.

It is an arithmetic number, because the mean of its divisors is an integer number (14625912).

Almost surely, 2^87755444 is an apocalyptic number.

It is an amenable number.

87755444 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.

87755444 is a wasteful number, since it uses less digits than its factorization.

87755444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3134134 (or 3134132 counting only the distinct ones).

The product of its digits is 627200, while the sum is 44.

The square root of 87755444 is about 9367.7875723140. The cubic root of 87755444 is about 444.3835997170.

The spelling of 87755444 in words is "eighty-seven million, seven hundred fifty-five thousand, four hundred forty-four".