9970776401 has 2 divisors, whose sum is σ = 9970776402. Its totient is φ = 9970776400.

The previous prime is 9970776397. The next prime is 9970776451. The reversal of 9970776401 is 1046770799.

It is a happy number.

9970776401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (9970776451) can be obtained adding 9970776401 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5264953600 + 4705822801 = 72560^2 + 68599^2 .

It is a cyclic number.

It is not a de Polignac number, because 9970776401 - 2² = 9970776397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9970776401.

It is not a weakly prime, because it can be changed into another prime (9970776451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4985388200 + 4985388201.

It is an arithmetic number, because the mean of its divisors is an integer number (4985388201).

Almost surely, 2^9970776401 is an apocalyptic number.

It is an amenable number.

9970776401 is a deficient number, since it is larger than the sum of its proper divisors (1).

9970776401 is an equidigital number, since it uses as much as digits as its factorization.

9970776401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 666792, while the sum is 50.

The square root of 9970776401 is about 99853.7750963878. The cubic root of 9970776401 is about 2152.3339644939. Note that the first 3 decimals are identical.

The spelling of 9970776401 in words is "nine billion, nine hundred seventy million, seven hundred seventy-six thousand, four hundred one".