1389140743 has 2 divisors, whose sum is σ = 1389140744. Its totient is φ = 1389140742.

The previous prime is 1389140719. The next prime is 1389140833. The reversal of 1389140743 is 3470419831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1389140743 - 2⁹ = 1389140231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1389140696 and 1389140705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1389140143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694570371 + 694570372.

It is an arithmetic number, because the mean of its divisors is an integer number (694570372).

Almost surely, 2^1389140743 is an apocalyptic number.

1389140743 is a deficient number, since it is larger than the sum of its proper divisors (1).

1389140743 is an equidigital number, since it uses as much as digits as its factorization.

1389140743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 1389140743 is about 37271.1784493058. The cubic root of 1389140743 is about 1115.7890191705.

The spelling of 1389140743 in words is "one billion, three hundred eighty-nine million, one hundred forty thousand, seven hundred forty-three".