2427944639 has 2 divisors, whose sum is σ = 2427944640. Its totient is φ = 2427944638.

The previous prime is 2427944633. The next prime is 2427944657. The reversal of 2427944639 is 9364497242.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2427944639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2427944633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1213972319 + 1213972320.

It is an arithmetic number, because the mean of its divisors is an integer number (1213972320).

Almost surely, 2^2427944639 is an apocalyptic number.

2427944639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2427944639 is an equidigital number, since it uses as much as digits as its factorization.

2427944639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 50.

The square root of 2427944639 is about 49274.1782173990. The cubic root of 2427944639 is about 1344.0422674771.

The spelling of 2427944639 in words is "two billion, four hundred twenty-seven million, nine hundred forty-four thousand, six hundred thirty-nine".