9639401 has 2 divisors, whose sum is σ = 9639402. Its totient is φ = 9639400.

The previous prime is 9639389. The next prime is 9639433. The reversal of 9639401 is 1049369.

9639401 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 (9639433) can be obtained adding 9639401 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7155625 + 2483776 = 2675^2 + 1576^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9639401 is a prime.

It is not a weakly prime, because it can be changed into another prime (9639601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4819700 + 4819701.

It is an arithmetic number, because the mean of its divisors is an integer number (4819701).

Almost surely, 2^9639401 is an apocalyptic number.

It is an amenable number.

9639401 is a deficient number, since it is larger than the sum of its proper divisors (1).

9639401 is an equidigital number, since it uses as much as digits as its factorization.

9639401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 9639401 is about 3104.7384752987. The cubic root of 9639401 is about 212.8220795230.

Subtracting from 9639401 its sum of digits (32), we obtain a palindrome (9639369).

The spelling of 9639401 in words is "nine million, six hundred thirty-nine thousand, four hundred one".