9747997479 has 24 divisors (see below), whose sum is σ = 15363588864. Its totient is φ = 5906682000.

The previous prime is 9747997459. The next prime is 9747997507.

9747997479 is nontrivially palindromic in base 10.

9747997479 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9747997479 - 2⁷ = 9747997351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9747997409) 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, 894594 + ... + 905424.

It is an arithmetic number, because the mean of its divisors is an integer number (640149536).

Almost surely, 2^9747997479 is an apocalyptic number.

9747997479 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

9747997479 is a deficient number, since it is larger than the sum of its proper divisors (5615591385).

9747997479 is a wasteful number, since it uses less digits than its factorization.

9747997479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19939 (or 19936 counting only the distinct ones).

The product of its digits is 252047376, while the sum is 72.

The square root of 9747997479 is about 98731.9476106898. The cubic root of 9747997479 is about 2136.1830729076.

The spelling of 9747997479 in words is "nine billion, seven hundred forty-seven million, nine hundred ninety-seven thousand, four hundred seventy-nine".