2439654963209 has 2 divisors, whose sum is σ = 2439654963210. Its totient is φ = 2439654963208.

The previous prime is 2439654963133. The next prime is 2439654963217. The reversal of 2439654963209 is 9023694569342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2225959561225 + 213695401984 = 1491965^2 + 462272^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2439654963209 is a prime.

It is not a weakly prime, because it can be changed into another prime (2439654963259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1219827481604 + 1219827481605.

It is an arithmetic number, because the mean of its divisors is an integer number (1219827481605).

Almost surely, 2^{2439654963209} is an apocalyptic number.

It is an amenable number.

2439654963209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2439654963209 is an equidigital number, since it uses as much as digits as its factorization.

2439654963209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75582720, while the sum is 62.

The spelling of 2439654963209 in words is "two trillion, four hundred thirty-nine billion, six hundred fifty-four million, nine hundred sixty-three thousand, two hundred nine".