9987441388 has 6 divisors (see below), whose sum is σ = 17478022436. Its totient is φ = 4993720692.

The previous prime is 9987441323. The next prime is 9987441403. The reversal of 9987441388 is 8831447899.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1248430170 + ... + 1248430177.

Almost surely, 2^9987441388 is an apocalyptic number.

It is an amenable number.

9987441388 is a deficient number, since it is larger than the sum of its proper divisors (7490581048).

9987441388 is a wasteful number, since it uses less digits than its factorization.

9987441388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2496860351 (or 2496860349 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 61.

The square root of 9987441388 is about 99937.1872127688. The cubic root of 9987441388 is about 2153.5324219068.

The spelling of 9987441388 in words is "nine billion, nine hundred eighty-seven million, four hundred forty-one thousand, three hundred eighty-eight".