9998782 has 4 divisors (see below), whose sum is σ = 14998176. Its totient is φ = 4999390.

The previous prime is 9998777. The next prime is 9998797. The reversal of 9998782 is 2878999.

9998782 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, 2499694 + ... + 2499697.

It is an arithmetic number, because the mean of its divisors is an integer number (3749544).

Almost surely, 2^9998782 is an apocalyptic number.

9998782 is a deficient number, since it is larger than the sum of its proper divisors (4999394).

9998782 is a wasteful number, since it uses less digits than its factorization.

9998782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4999393.

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

The square root of 9998782 is about 3162.0850715944. The cubic root of 9998782 is about 215.4347216432.

The spelling of 9998782 in words is "nine million, nine hundred ninety-eight thousand, seven hundred eighty-two".