1358009 has 2 divisors, whose sum is σ = 1358010. Its totient is φ = 1358008.

The previous prime is 1357969. The next prime is 1358029. The reversal of 1358009 is 9008531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1357225 + 784 = 1165^2 + 28^2 .

It is a cyclic number.

It is not a de Polignac number, because 1358009 - 2⁸ = 1357753 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1358029) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 679004 + 679005.

It is an arithmetic number, because the mean of its divisors is an integer number (679005).

2^1358009 is an apocalyptic number.

It is an amenable number.

1358009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1358009 is an equidigital number, since it uses as much as digits as its factorization.

1358009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1358009 is about 1165.3364321088. The cubic root of 1358009 is about 110.7390727516.

The spelling of 1358009 in words is "one million, three hundred fifty-eight thousand, nine".