9978492474 has 24 divisors (see below), whose sum is σ = 22317489792. Its totient is φ = 3218868360.

The previous prime is 9978492457. The next prime is 9978492509. The reversal of 9978492474 is 4742948799.

9978492474 is a `hidden beast` number, since 9 + 9 + 78 + 4 + 92 + 474 = 666.

9978492474 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8940744 + ... + 8941859.

It is an arithmetic number, because the mean of its divisors is an integer number (929895408).

Almost surely, 2^9978492474 is an apocalyptic number.

9978492474 is an abundant number, since it is smaller than the sum of its proper divisors (12338997318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9978492474 is a wasteful number, since it uses less digits than its factorization.

9978492474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17882642 (or 17882639 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 63.

The square root of 9978492474 is about 99892.4044860269. The cubic root of 9978492474 is about 2152.8890293868.

The spelling of 9978492474 in words is "nine billion, nine hundred seventy-eight million, four hundred ninety-two thousand, four hundred seventy-four".