9641409949 has 2 divisors, whose sum is σ = 9641409950. Its totient is φ = 9641409948.

The previous prime is 9641409941. The next prime is 9641410007. The reversal of 9641409949 is 9499041469.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6221265625 + 3420144324 = 78875^2 + 58482^2 .

It is a cyclic number.

It is not a de Polignac number, because 9641409949 - 2³ = 9641409941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9641409949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9641409941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4820704974 + 4820704975.

It is an arithmetic number, because the mean of its divisors is an integer number (4820704975).

Almost surely, 2^9641409949 is an apocalyptic number.

It is an amenable number.

9641409949 is a deficient number, since it is larger than the sum of its proper divisors (1).

9641409949 is an equidigital number, since it uses as much as digits as its factorization.

9641409949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2519424, while the sum is 55.

The square root of 9641409949 is about 98190.6815792619. The cubic root of 9641409949 is about 2128.3686325650.

The spelling of 9641409949 in words is "nine billion, six hundred forty-one million, four hundred nine thousand, nine hundred forty-nine".