2205660439 has 2 divisors, whose sum is σ = 2205660440. Its totient is φ = 2205660438.

The previous prime is 2205660419. The next prime is 2205660449. The reversal of 2205660439 is 9340665022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2205660439 - 2⁷ = 2205660311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2205660398 and 2205660407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2205660409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1102830219 + 1102830220.

It is an arithmetic number, because the mean of its divisors is an integer number (1102830220).

Almost surely, 2^2205660439 is an apocalyptic number.

2205660439 is a deficient number, since it is larger than the sum of its proper divisors (1).

2205660439 is an equidigital number, since it uses as much as digits as its factorization.

2205660439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 2205660439 is about 46964.4593176585. The cubic root of 2205660439 is about 1301.7059337705.

The spelling of 2205660439 in words is "two billion, two hundred five million, six hundred sixty thousand, four hundred thirty-nine".