987856444 has 6 divisors (see below), whose sum is σ = 1728748784. Its totient is φ = 493928220.

The previous prime is 987856409. The next prime is 987856477. The reversal of 987856444 is 444658789.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123482052 + ... + 123482059.

Almost surely, 2^987856444 is an apocalyptic number.

It is an amenable number.

987856444 is a deficient number, since it is larger than the sum of its proper divisors (740892340).

987856444 is a wasteful number, since it uses less digits than its factorization.

987856444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246964115 (or 246964113 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 55.

The square root of 987856444 is about 31430.1836456614. The cubic root of 987856444 is about 995.9356514504.

The spelling of 987856444 in words is "nine hundred eighty-seven million, eight hundred fifty-six thousand, four hundred forty-four".