1293689039 has 2 divisors, whose sum is σ = 1293689040. Its totient is φ = 1293689038.

The previous prime is 1293689029. The next prime is 1293689051. The reversal of 1293689039 is 9309863921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1293689039 - 2¹² = 1293684943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1293689029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646844519 + 646844520.

It is an arithmetic number, because the mean of its divisors is an integer number (646844520).

Almost surely, 2^1293689039 is an apocalyptic number.

1293689039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1293689039 is an equidigital number, since it uses as much as digits as its factorization.

1293689039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 629856, while the sum is 50.

The square root of 1293689039 is about 35967.8889983830. Note that the first 3 decimals coincide. The cubic root of 1293689039 is about 1089.6239308093.

The spelling of 1293689039 in words is "one billion, two hundred ninety-three million, six hundred eighty-nine thousand, thirty-nine".