87827444 has 6 divisors (see below), whose sum is σ = 153698034. Its totient is φ = 43913720.

The previous prime is 87827417. The next prime is 87827447. The reversal of 87827444 is 44472878.

It can be written as a sum of positive squares in only one way, i.e., 77651344 + 10176100 = 8812^2 + 3190^2 .

It is a junction number, because it is equal to n+sod(n) for n = 87827395 and 87827404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87827447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10978427 + ... + 10978434.

It is an arithmetic number, because the mean of its divisors is an integer number (25616339).

Almost surely, 2^87827444 is an apocalyptic number.

It is an amenable number.

87827444 is a deficient number, since it is larger than the sum of its proper divisors (65870590).

87827444 is a wasteful number, since it uses less digits than its factorization.

87827444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21956865 (or 21956863 counting only the distinct ones).

The product of its digits is 401408, while the sum is 44.

The square root of 87827444 is about 9371.6297408722. The cubic root of 87827444 is about 444.5050997680.

The spelling of 87827444 in words is "eighty-seven million, eight hundred twenty-seven thousand, four hundred forty-four".