1389695959 has 2 divisors, whose sum is σ = 1389695960. Its totient is φ = 1389695958.

The previous prime is 1389695941. The next prime is 1389696001. The reversal of 1389695959 is 9595969831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1389695959 - 2⁵ = 1389695927 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1389695959.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1389695059) 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, 694847979 + 694847980.

It is an arithmetic number, because the mean of its divisors is an integer number (694847980).

Almost surely, 2^1389695959 is an apocalyptic number.

1389695959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1389695959 is an equidigital number, since it uses as much as digits as its factorization.

1389695959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23619600, while the sum is 64.

The square root of 1389695959 is about 37278.6260342304. The cubic root of 1389695959 is about 1115.9376533538.

The spelling of 1389695959 in words is "one billion, three hundred eighty-nine million, six hundred ninety-five thousand, nine hundred fifty-nine".