4209960990749 has 2 divisors, whose sum is σ = 4209960990750. Its totient is φ = 4209960990748.

The previous prime is 4209960990661. The next prime is 4209960990863. The reversal of 4209960990749 is 9470990699024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2187905430649 + 2022055560100 = 1479157^2 + 1421990^2 .

It is a cyclic number.

It is not a de Polignac number, because 4209960990749 - 2¹⁶ = 4209960925213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4209960990049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2104980495374 + 2104980495375.

It is an arithmetic number, because the mean of its divisors is an integer number (2104980495375).

Almost surely, 2^{4209960990749} is an apocalyptic number.

It is an amenable number.

4209960990749 is a deficient number, since it is larger than the sum of its proper divisors (1).

4209960990749 is an equidigital number, since it uses as much as digits as its factorization.

4209960990749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79361856, while the sum is 68.

The spelling of 4209960990749 in words is "four trillion, two hundred nine billion, nine hundred sixty million, nine hundred ninety thousand, seven hundred forty-nine".