9965401 has 2 divisors, whose sum is σ = 9965402. Its totient is φ = 9965400.

The previous prime is 9965399. The next prime is 9965407. The reversal of 9965401 is 1045699.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6885376 + 3080025 = 2624^2 + 1755^2 .

It is a cyclic number.

It is not a de Polignac number, because 9965401 - 2¹ = 9965399 is a prime.

Together with 9965399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9965407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4982700 + 4982701.

It is an arithmetic number, because the mean of its divisors is an integer number (4982701).

Almost surely, 2^9965401 is an apocalyptic number.

It is an amenable number.

9965401 is a deficient number, since it is larger than the sum of its proper divisors (1).

9965401 is an equidigital number, since it uses as much as digits as its factorization.

9965401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 9965401 is about 3156.8023378096. The cubic root of 9965401 is about 215.1947109367.

The spelling of 9965401 in words is "nine million, nine hundred sixty-five thousand, four hundred one".