1389760429 has 2 divisors, whose sum is σ = 1389760430. Its totient is φ = 1389760428.

The previous prime is 1389760423. The next prime is 1389760451. The reversal of 1389760429 is 9240679831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1059502500 + 330257929 = 32550^2 + 18173^2 .

It is a cyclic number.

It is not a de Polignac number, because 1389760429 - 2²³ = 1381371821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1389760423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694880214 + 694880215.

It is an arithmetic number, because the mean of its divisors is an integer number (694880215).

Almost surely, 2^1389760429 is an apocalyptic number.

It is an amenable number.

1389760429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1389760429 is an equidigital number, since it uses as much as digits as its factorization.

1389760429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 1389760429 is about 37279.4907288176. The cubic root of 1389760429 is about 1115.9549097394.

The spelling of 1389760429 in words is "one billion, three hundred eighty-nine million, seven hundred sixty thousand, four hundred twenty-nine".