9947804562 has 40 divisors (see below), whose sum is σ = 22354447500. Its totient is φ = 3306414816.

The previous prime is 9947804527. The next prime is 9947804591. The reversal of 9947804562 is 2654087499.

9947804562 is a `hidden beast` number, since 9 + 9 + 4 + 78 + 0 + 4 + 562 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8212165641 + 1735638921 = 90621^2 + 41661^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 9947804499 and 9947804508.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 31437 + ... + 144512.

Almost surely, 2^9947804562 is an apocalyptic number.

9947804562 is an abundant number, since it is smaller than the sum of its proper divisors (12406642938).

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

9947804562 is a wasteful number, since it uses less digits than its factorization.

9947804562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176312 (or 176303 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The square root of 9947804562 is about 99738.6813728756. The cubic root of 9947804562 is about 2150.6797606854.

The spelling of 9947804562 in words is "nine billion, nine hundred forty-seven million, eight hundred four thousand, five hundred sixty-two".