9987814 has 4 divisors (see below), whose sum is σ = 14981724. Its totient is φ = 4993906.

The previous prime is 9987793. The next prime is 9987827. The reversal of 9987814 is 4187899.

It is a happy number.

9987814 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

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, 2496952 + ... + 2496955.

It is an arithmetic number, because the mean of its divisors is an integer number (3745431).

Almost surely, 2^9987814 is an apocalyptic number.

9987814 is a deficient number, since it is larger than the sum of its proper divisors (4993910).

9987814 is a wasteful number, since it uses less digits than its factorization.

9987814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4993909.

The product of its digits is 145152, while the sum is 46.

The square root of 9987814 is about 3160.3502970399. The cubic root of 9987814 is about 215.3559202942.

It can be divided in two parts, 9987 and 814, that added together give a palindrome (10801).

The spelling of 9987814 in words is "nine million, nine hundred eighty-seven thousand, eight hundred fourteen".