9878820492 has 12 divisors (see below), whose sum is σ = 23050581176. Its totient is φ = 3292940160.

The previous prime is 9878820463. The next prime is 9878820521. The reversal of 9878820492 is 2940288789.

It is an interprime number because it is at equal distance from previous prime (9878820463) and next prime (9878820521).

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411617509 + ... + 411617532.

Almost surely, 2^9878820492 is an apocalyptic number.

It is an amenable number.

9878820492 is an abundant number, since it is smaller than the sum of its proper divisors (13171760684).

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

9878820492 is a wasteful number, since it uses less digits than its factorization.

9878820492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823235048 (or 823235046 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 57.

The square root of 9878820492 is about 99392.2556942944. The cubic root of 9878820492 is about 2145.6968549965.

The spelling of 9878820492 in words is "nine billion, eight hundred seventy-eight million, eight hundred twenty thousand, four hundred ninety-two".