1399389559 has 2 divisors, whose sum is σ = 1399389560. Its totient is φ = 1399389558.

The previous prime is 1399389557. The next prime is 1399389583. The reversal of 1399389559 is 9559839931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1399389559 - 2¹ = 1399389557 is a prime.

It is a super-2 number, since 2×1399389559² = 3916582275676428962, which contains 22 as substring.

Together with 1399389557, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1399389497 and 1399389506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1399389557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699694779 + 699694780.

It is an arithmetic number, because the mean of its divisors is an integer number (699694780).

Almost surely, 2^1399389559 is an apocalyptic number.

1399389559 is a deficient number, since it is larger than the sum of its proper divisors (1).

1399389559 is an equidigital number, since it uses as much as digits as its factorization.

1399389559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11809800, while the sum is 61.

The square root of 1399389559 is about 37408.4156173447. The cubic root of 1399389559 is about 1118.5263247303.

The spelling of 1399389559 in words is "one billion, three hundred ninety-nine million, three hundred eighty-nine thousand, five hundred fifty-nine".