9878722346 has 4 divisors (see below), whose sum is σ = 14818083522. Its totient is φ = 4939361172.

The previous prime is 9878722331. The next prime is 9878722369. The reversal of 9878722346 is 6432278789.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9261945121 + 616777225 = 96239^2 + 24835^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9878722291 and 9878722300.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2469680585 + ... + 2469680588.

Almost surely, 2^9878722346 is an apocalyptic number.

9878722346 is a deficient number, since it is larger than the sum of its proper divisors (4939361176).

9878722346 is a wasteful number, since it uses less digits than its factorization.

9878722346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4939361175.

The product of its digits is 8128512, while the sum is 56.

The square root of 9878722346 is about 99391.7619624484. The cubic root of 9878722346 is about 2145.6897491462.

The spelling of 9878722346 in words is "nine billion, eight hundred seventy-eight million, seven hundred twenty-two thousand, three hundred forty-six".