9778982 has 4 divisors (see below), whose sum is σ = 14668476. Its totient is φ = 4889490.

The previous prime is 9778973. The next prime is 9778991. The reversal of 9778982 is 2898779.

It is a happy number.

9778982 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 an interprime number because it is at equal distance from previous prime (9778973) and next prime (9778991).

It is a self number, because there is not a number n which added to its sum of digits gives 9778982.

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, 2444744 + ... + 2444747.

It is an arithmetic number, because the mean of its divisors is an integer number (3667119).

Almost surely, 2^9778982 is an apocalyptic number.

9778982 is a deficient number, since it is larger than the sum of its proper divisors (4889494).

9778982 is a wasteful number, since it uses less digits than its factorization.

9778982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4889493.

The product of its digits is 508032, while the sum is 50.

The square root of 9778982 is about 3127.1363897342. The cubic root of 9778982 is about 213.8444002396.

The spelling of 9778982 in words is "nine million, seven hundred seventy-eight thousand, nine hundred eighty-two".