9724471772 has 6 divisors (see below), whose sum is σ = 17017825608. Its totient is φ = 4862235884.

The previous prime is 9724471763. The next prime is 9724471781. The reversal of 9724471772 is 2771744279.

It is an interprime number because it is at equal distance from previous prime (9724471763) and next prime (9724471781).

It is a self number, because there is not a number n which added to its sum of digits gives 9724471772.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1215558968 + ... + 1215558975.

It is an arithmetic number, because the mean of its divisors is an integer number (2836304268).

Almost surely, 2^9724471772 is an apocalyptic number.

It is an amenable number.

9724471772 is a deficient number, since it is larger than the sum of its proper divisors (7293353836).

9724471772 is a wasteful number, since it uses less digits than its factorization.

9724471772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2431117947 (or 2431117945 counting only the distinct ones).

The product of its digits is 1382976, while the sum is 50.

The square root of 9724471772 is about 98612.7363579371. The cubic root of 9724471772 is about 2134.4632085652.

It can be divided in two parts, 972 and 4471772, that added together give a palindrome (4472744).

The spelling of 9724471772 in words is "nine billion, seven hundred twenty-four million, four hundred seventy-one thousand, seven hundred seventy-two".