1294730389 has 2 divisors, whose sum is σ = 1294730390. Its totient is φ = 1294730388.

The previous prime is 1294730303. The next prime is 1294730401. The reversal of 1294730389 is 9830374921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 979064100 + 315666289 = 31290^2 + 17767^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1294730389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1294730089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 647365194 + 647365195.

It is an arithmetic number, because the mean of its divisors is an integer number (647365195).

Almost surely, 2^1294730389 is an apocalyptic number.

It is an amenable number.

1294730389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1294730389 is an equidigital number, since it uses as much as digits as its factorization.

1294730389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 1294730389 is about 35982.3621931635. The cubic root of 1294730389 is about 1089.9162152584.

The spelling of 1294730389 in words is "one billion, two hundred ninety-four million, seven hundred thirty thousand, three hundred eighty-nine".