1389382259 has 2 divisors, whose sum is σ = 1389382260. Its totient is φ = 1389382258.

The previous prime is 1389382249. The next prime is 1389382261. The reversal of 1389382259 is 9522839831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1389382259 - 2⁸ = 1389382003 is a prime.

It is a Sophie Germain prime.

Together with 1389382261, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1389382249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694691129 + 694691130.

It is an arithmetic number, because the mean of its divisors is an integer number (694691130).

Almost surely, 2^1389382259 is an apocalyptic number.

1389382259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1389382259 is an equidigital number, since it uses as much as digits as its factorization.

1389382259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 50.

The square root of 1389382259 is about 37274.4182919063. The cubic root of 1389382259 is about 1115.8536791138.

The spelling of 1389382259 in words is "one billion, three hundred eighty-nine million, three hundred eighty-two thousand, two hundred fifty-nine".