9975394272 has 48 divisors (see below), whose sum is σ = 27030108672. Its totient is φ = 3217868160.

The previous prime is 9975394271. The next prime is 9975394411. The reversal of 9975394272 is 2724935799.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9975394271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1672998 + ... + 1678949.

It is an arithmetic number, because the mean of its divisors is an integer number (563127264).

Almost surely, 2^9975394272 is an apocalyptic number.

It is an amenable number.

9975394272 is an abundant number, since it is smaller than the sum of its proper divisors (17054714400).

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

9975394272 is a wasteful number, since it uses less digits than its factorization.

9975394272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3351991 (or 3351983 counting only the distinct ones).

The product of its digits is 8573040, while the sum is 57.

The square root of 9975394272 is about 99876.8955865169. The cubic root of 9975394272 is about 2152.6661909316. Note that the first 3 decimals are identical.

The spelling of 9975394272 in words is "nine billion, nine hundred seventy-five million, three hundred ninety-four thousand, two hundred seventy-two".