2405949817 has 2 divisors, whose sum is σ = 2405949818. Its totient is φ = 2405949816.

The previous prime is 2405949757. The next prime is 2405949839. The reversal of 2405949817 is 7189495042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2324300521 + 81649296 = 48211^2 + 9036^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2405949817 is a prime.

It is not a weakly prime, because it can be changed into another prime (2405949517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1202974908 + 1202974909.

It is an arithmetic number, because the mean of its divisors is an integer number (1202974909).

Almost surely, 2^2405949817 is an apocalyptic number.

It is an amenable number.

2405949817 is a deficient number, since it is larger than the sum of its proper divisors (1).

2405949817 is an equidigital number, since it uses as much as digits as its factorization.

2405949817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 2405949817 is about 49050.4823319812. The cubic root of 2405949817 is about 1339.9713770154.

The spelling of 2405949817 in words is "two billion, four hundred five million, nine hundred forty-nine thousand, eight hundred seventeen".