9987892 has 6 divisors (see below), whose sum is σ = 17478818. Its totient is φ = 4993944.

The previous prime is 9987889. The next prime is 9987893. The reversal of 9987892 is 2987899.

It can be written as a sum of positive squares in only one way, i.e., 9960336 + 27556 = 3156^2 + 166^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9987893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1248483 + ... + 1248490.

Almost surely, 2^9987892 is an apocalyptic number.

It is an amenable number.

9987892 is a deficient number, since it is larger than the sum of its proper divisors (7490926).

9987892 is a wasteful number, since it uses less digits than its factorization.

9987892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2496977 (or 2496975 counting only the distinct ones).

The product of its digits is 653184, while the sum is 52.

The square root of 9987892 is about 3160.3626374200. The cubic root of 9987892 is about 215.3564809012.

The spelling of 9987892 in words is "nine million, nine hundred eighty-seven thousand, eight hundred ninety-two".