9876638 has 4 divisors (see below), whose sum is σ = 14814960. Its totient is φ = 4938318.

The previous prime is 9876623. The next prime is 9876641. The reversal of 9876638 is 8366789.

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

It is a junction number, because it is equal to n+sod(n) for n = 9876592 and 9876601.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2469158 + ... + 2469161.

It is an arithmetic number, because the mean of its divisors is an integer number (3703740).

Almost surely, 2^9876638 is an apocalyptic number.

9876638 is a deficient number, since it is larger than the sum of its proper divisors (4938322).

9876638 is a wasteful number, since it uses less digits than its factorization.

9876638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4938321.

The product of its digits is 435456, while the sum is 47.

The square root of 9876638 is about 3142.7118862537. The cubic root of 9876638 is about 214.5538829683.

The spelling of 9876638 in words is "nine million, eight hundred seventy-six thousand, six hundred thirty-eight".