1389036269 has 2 divisors, whose sum is σ = 1389036270. Its totient is φ = 1389036268.

The previous prime is 1389036227. The next prime is 1389036281. The reversal of 1389036269 is 9626309831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 727003369 + 662032900 = 26963^2 + 25730^2 .

It is an emirp because it is prime and its reverse (9626309831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1389036269 - 2¹² = 1389032173 is a prime.

It is a super-2 number, since 2×1389036269² = 3858843513194880722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1389036169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694518134 + 694518135.

It is an arithmetic number, because the mean of its divisors is an integer number (694518135).

Almost surely, 2^1389036269 is an apocalyptic number.

It is an amenable number.

1389036269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1389036269 is an equidigital number, since it uses as much as digits as its factorization.

1389036269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 47.

The square root of 1389036269 is about 37269.7768842262. The cubic root of 1389036269 is about 1115.7610465155.

The spelling of 1389036269 in words is "one billion, three hundred eighty-nine million, thirty-six thousand, two hundred sixty-nine".