1942009008439 has 2 divisors, whose sum is σ = 1942009008440. Its totient is φ = 1942009008438.

The previous prime is 1942009008431. The next prime is 1942009008449. The reversal of 1942009008439 is 9348009002491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1942009008439 - 2³ = 1942009008431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1942009008392 and 1942009008401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1942009008431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 971004504219 + 971004504220.

It is an arithmetic number, because the mean of its divisors is an integer number (971004504220).

Almost surely, 2^{1942009008439} is an apocalyptic number.

1942009008439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1942009008439 is an equidigital number, since it uses as much as digits as its factorization.

1942009008439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 49.

The spelling of 1942009008439 in words is "one trillion, nine hundred forty-two billion, nine million, eight thousand, four hundred thirty-nine".