9949471947 has 24 divisors (see below), whose sum is σ = 14926591680. Its totient is φ = 6622809480.

The previous prime is 9949471937. The next prime is 9949471949. The reversal of 9949471947 is 7491749499.

9949471947 is a `hidden beast` number, since 99 + 494 + 7 + 19 + 47 = 666.

It is not a de Polignac number, because 9949471947 - 2¹¹ = 9949469899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9949471949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129072 + ... + 191202.

It is an arithmetic number, because the mean of its divisors is an integer number (621941320).

Almost surely, 2^9949471947 is an apocalyptic number.

9949471947 is a deficient number, since it is larger than the sum of its proper divisors (4977119733).

9949471947 is an equidigital number, since it uses as much as digits as its factorization.

9949471947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62805 (or 62793 counting only the distinct ones).

The product of its digits is 20575296, while the sum is 63.

The square root of 9949471947 is about 99747.0397906625. The cubic root of 9949471947 is about 2150.7999148633.

The spelling of 9949471947 in words is "nine billion, nine hundred forty-nine million, four hundred seventy-one thousand, nine hundred forty-seven".