4139950649 has 2 divisors, whose sum is σ = 4139950650. Its totient is φ = 4139950648.

The previous prime is 4139950643. The next prime is 4139950657. The reversal of 4139950649 is 9460599314.

4139950649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4064955049 + 74995600 = 63757^2 + 8660^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4139950649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4139950597 and 4139950606.

It is not a weakly prime, because it can be changed into another prime (4139950643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2069975324 + 2069975325.

It is an arithmetic number, because the mean of its divisors is an integer number (2069975325).

Almost surely, 2^4139950649 is an apocalyptic number.

It is an amenable number.

4139950649 is a deficient number, since it is larger than the sum of its proper divisors (1).

4139950649 is an equidigital number, since it uses as much as digits as its factorization.

4139950649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1049760, while the sum is 50.

The square root of 4139950649 is about 64342.4482670655. The cubic root of 4139950649 is about 1605.7023933053.

The spelling of 4139950649 in words is "four billion, one hundred thirty-nine million, nine hundred fifty thousand, six hundred forty-nine".