9978708229 has 16 divisors (see below), whose sum is σ = 12401434368. Its totient is φ = 7832477952.

The previous prime is 9978708193. The next prime is 9978708253. The reversal of 9978708229 is 9228078799.

It is a cyclic number.

It is not a de Polignac number, because 9978708229 - 2⁷ = 9978708101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9978708029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1128769 + ... + 1137574.

It is an arithmetic number, because the mean of its divisors is an integer number (775089648).

Almost surely, 2^9978708229 is an apocalyptic number.

It is an amenable number.

9978708229 is a deficient number, since it is larger than the sum of its proper divisors (2422726139).

9978708229 is a wasteful number, since it uses less digits than its factorization.

9978708229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266404.

The product of its (nonzero) digits is 9144576, while the sum is 61.

The square root of 9978708229 is about 99893.4844171531. The cubic root of 9978708229 is about 2152.9045458664.

The spelling of 9978708229 in words is "nine billion, nine hundred seventy-eight million, seven hundred eight thousand, two hundred twenty-nine".