1408289 has 2 divisors, whose sum is σ = 1408290. Its totient is φ = 1408288.

The previous prime is 1408279. The next prime is 1408301. The reversal of 1408289 is 9828041.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1227664 + 180625 = 1108^2 + 425^2 .

It is a cyclic number.

It is not a de Polignac number, because 1408289 - 2¹⁶ = 1342753 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1408219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 704144 + 704145.

It is an arithmetic number, because the mean of its divisors is an integer number (704145).

2^1408289 is an apocalyptic number.

It is an amenable number.

1408289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1408289 is an equidigital number, since it uses as much as digits as its factorization.

1408289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 1408289 is about 1186.7135290372. The cubic root of 1408289 is about 112.0892411615.

The spelling of 1408289 in words is "one million, four hundred eight thousand, two hundred eighty-nine".