9679774638 has 8 divisors (see below), whose sum is σ = 19359549288. Its totient is φ = 3226591544.

The previous prime is 9679774609. The next prime is 9679774661. The reversal of 9679774638 is 8364779769.

9679774638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

9679774638 is an admirable number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 806647881 + ... + 806647892.

It is an arithmetic number, because the mean of its divisors is an integer number (2419943661).

Almost surely, 2^9679774638 is an apocalyptic number.

9679774638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

9679774638 is a wasteful number, since it uses less digits than its factorization.

9679774638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613295778.

The product of its digits is 96018048, while the sum is 66.

The square root of 9679774638 is about 98385.8457197985. The cubic root of 9679774638 is about 2131.1879344068.

The spelling of 9679774638 in words is "nine billion, six hundred seventy-nine million, seven hundred seventy-four thousand, six hundred thirty-eight".