1294392959989 has 2 divisors, whose sum is σ = 1294392959990. Its totient is φ = 1294392959988.

The previous prime is 1294392959953. The next prime is 1294392960019. The reversal of 1294392959989 is 9899592934921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 658134675025 + 636258284964 = 811255^2 + 797658^2 .

It is a cyclic number.

It is not a de Polignac number, because 1294392959989 - 2¹⁵ = 1294392927221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1294392959939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 647196479994 + 647196479995.

It is an arithmetic number, because the mean of its divisors is an integer number (647196479995).

Almost surely, 2^{1294392959989} is an apocalyptic number.

It is an amenable number.

1294392959989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1294392959989 is an equidigital number, since it uses as much as digits as its factorization.

1294392959989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1020366720, while the sum is 79.

The spelling of 1294392959989 in words is "one trillion, two hundred ninety-four billion, three hundred ninety-two million, nine hundred fifty-nine thousand, nine hundred eighty-nine".