9711972 has 36 divisors (see below), whose sum is σ = 24651900. Its totient is φ = 3223872.

The previous prime is 9711971. The next prime is 9711979. The reversal of 9711972 is 2791179.

It can be written as a sum of positive squares in 2 ways, for example, as 3481956 + 6230016 = 1866^2 + 2496^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (9711971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12178 + ... + 12950.

It is an arithmetic number, because the mean of its divisors is an integer number (684775).

Almost surely, 2^9711972 is an apocalyptic number.

It is an amenable number.

9711972 is an abundant number, since it is smaller than the sum of its proper divisors (14939928).

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

9711972 is a wasteful number, since it uses less digits than its factorization.

9711972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132 (or 1127 counting only the distinct ones).

The product of its digits is 7938, while the sum is 36.

The square root of 9711972 is about 3116.4036965708. The cubic root of 9711972 is about 213.3548274784.

The spelling of 9711972 in words is "nine million, seven hundred eleven thousand, nine hundred seventy-two".