9797878 has 4 divisors (see below), whose sum is σ = 14696820. Its totient is φ = 4898938.

The previous prime is 9797869. The next prime is 9797903. The reversal of 9797878 is 8787979.

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 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, 2449468 + ... + 2449471.

It is an arithmetic number, because the mean of its divisors is an integer number (3674205).

Almost surely, 2^9797878 is an apocalyptic number.

9797878 is a deficient number, since it is larger than the sum of its proper divisors (4898942).

9797878 is a wasteful number, since it uses less digits than its factorization.

9797878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4898941.

The product of its digits is 1778112, while the sum is 55.

The square root of 9797878 is about 3130.1562261331. The cubic root of 9797878 is about 213.9820493284.

The spelling of 9797878 in words is "nine million, seven hundred ninety-seven thousand, eight hundred seventy-eight".