9649601279 has 2 divisors, whose sum is σ = 9649601280. Its totient is φ = 9649601278.

The previous prime is 9649601257. The next prime is 9649601281. The reversal of 9649601279 is 9721069469.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9649601279 - 2⁸ = 9649601023 is a prime.

It is a super-2 number, since 2×9649601279² (a number of 21 digits) contains 22 as substring.

Together with 9649601281, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9649601279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9649601239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4824800639 + 4824800640.

It is an arithmetic number, because the mean of its divisors is an integer number (4824800640).

Almost surely, 2^9649601279 is an apocalyptic number.

9649601279 is a deficient number, since it is larger than the sum of its proper divisors (1).

9649601279 is an equidigital number, since it uses as much as digits as its factorization.

9649601279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1469664, while the sum is 53.

The square root of 9649601279 is about 98232.3840645232. The cubic root of 9649601279 is about 2128.9712150678.

The spelling of 9649601279 in words is "nine billion, six hundred forty-nine million, six hundred one thousand, two hundred seventy-nine".