9976280121 has 6 divisors (see below), whose sum is σ = 14410182410. Its totient is φ = 6650853408.

The previous prime is 9976280117. The next prime is 9976280143. The reversal of 9976280121 is 1210826799.

9976280121 is a `hidden beast` number, since 9 + 9 + 7 + 628 + 0 + 12 + 1 = 666.

9976280121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9037164096 + 939116025 = 95064^2 + 30645^2 .

It is not a de Polignac number, because 9976280121 - 2² = 9976280117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9976280021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 554237776 + ... + 554237793.

Almost surely, 2^9976280121 is an apocalyptic number.

It is an amenable number.

9976280121 is a deficient number, since it is larger than the sum of its proper divisors (4433902289).

9976280121 is a wasteful number, since it uses less digits than its factorization.

9976280121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108475575 (or 1108475572 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 9976280121 is about 99881.3301923838. The cubic root of 9976280121 is about 2152.7299104096.

The spelling of 9976280121 in words is "nine billion, nine hundred seventy-six million, two hundred eighty thousand, one hundred twenty-one".