87475444 has 12 divisors (see below), whose sum is σ = 174950944. Its totient is φ = 37489464.

The previous prime is 87475439. The next prime is 87475457. The reversal of 87475444 is 44457478.

87475444 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 87475444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1562034 + ... + 1562089.

Almost surely, 2^87475444 is an apocalyptic number.

It is an amenable number.

87475444 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.

87475444 is a wasteful number, since it uses less digits than its factorization.

87475444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3124134 (or 3124132 counting only the distinct ones).

The product of its digits is 501760, while the sum is 43.

The square root of 87475444 is about 9352.8308014205. The cubic root of 87475444 is about 443.9104667558.

The spelling of 87475444 in words is "eighty-seven million, four hundred seventy-five thousand, four hundred forty-four".