8340648949 has 2 divisors, whose sum is σ = 8340648950. Its totient is φ = 8340648948.

The previous prime is 8340648941. The next prime is 8340648971. The reversal of 8340648949 is 9498460438.

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., 7961100625 + 379548324 = 89225^2 + 19482^2 .

It is a cyclic number.

It is not a de Polignac number, because 8340648949 - 2³ = 8340648941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8340648949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8340648941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4170324474 + 4170324475.

It is an arithmetic number, because the mean of its divisors is an integer number (4170324475).

Almost surely, 2^8340648949 is an apocalyptic number.

It is an amenable number.

8340648949 is a deficient number, since it is larger than the sum of its proper divisors (1).

8340648949 is an equidigital number, since it uses as much as digits as its factorization.

8340648949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5971968, while the sum is 55.

The square root of 8340648949 is about 91327.1534046693. The cubic root of 8340648949 is about 2027.9937590339.

It can be divided in two parts, 83406 and 48949, that added together give a triangular number (132355 = T₅₁₄).

The spelling of 8340648949 in words is "eight billion, three hundred forty million, six hundred forty-eight thousand, nine hundred forty-nine".