1361009 has 4 divisors (see below), whose sum is σ = 1465716. Its totient is φ = 1256304.

The previous prime is 1360981. The next prime is 1361011. The reversal of 1361009 is 9001631.

1361009 is nontrivially palindromic in base 12.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9001631 = 839 ⋅10729.

It can be written as a sum of positive squares in 2 ways, for example, as 600625 + 760384 = 775^2 + 872^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361009 - 2⁸ = 1360753 is a prime.

It is a Duffinian number.

It is a zygodrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (1361029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52334 + ... + 52359.

It is an arithmetic number, because the mean of its divisors is an integer number (366429).

2^1361009 is an apocalyptic number.

It is an amenable number.

1361009 is a deficient number, since it is larger than the sum of its proper divisors (104707).

1361009 is a wasteful number, since it uses less digits than its factorization.

1361009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104706.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 1361009 is about 1166.6229039411. The cubic root of 1361009 is about 110.8205579461.

The spelling of 1361009 in words is "one million, three hundred sixty-one thousand, nine".