1382989 has 2 divisors, whose sum is σ = 1382990. Its totient is φ = 1382988.

The previous prime is 1382987. The next prime is 1382999. The reversal of 1382989 is 9892831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1340964 + 42025 = 1158^2 + 205^2 .

It is a cyclic number.

It is not a de Polignac number, because 1382989 - 2¹ = 1382987 is a prime.

Together with 1382987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1382987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 691494 + 691495.

It is an arithmetic number, because the mean of its divisors is an integer number (691495).

2^1382989 is an apocalyptic number.

It is an amenable number.

1382989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1382989 is an equidigital number, since it uses as much as digits as its factorization.

1382989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 40.

The square root of 1382989 is about 1176.0055271979. The cubic root of 1382989 is about 111.4139509166.

The spelling of 1382989 in words is "one million, three hundred eighty-two thousand, nine hundred eighty-nine".