9715823972 has 6 divisors (see below), whose sum is σ = 17002691958. Its totient is φ = 4857911984.

The previous prime is 9715823947. The next prime is 9715823989. The reversal of 9715823972 is 2793285179.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8075897956 + 1639926016 = 89866^2 + 40496^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1214477993 + ... + 1214478000.

It is an arithmetic number, because the mean of its divisors is an integer number (2833781993).

Almost surely, 2^9715823972 is an apocalyptic number.

It is an amenable number.

9715823972 is a deficient number, since it is larger than the sum of its proper divisors (7286867986).

9715823972 is a wasteful number, since it uses less digits than its factorization.

9715823972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428955997 (or 2428955995 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 53.

The square root of 9715823972 is about 98568.8793281125. The cubic root of 9715823972 is about 2133.8303075140.

The spelling of 9715823972 in words is "nine billion, seven hundred fifteen million, eight hundred twenty-three thousand, nine hundred seventy-two".