1362409 has 2 divisors, whose sum is σ = 1362410. Its totient is φ = 1362408.

The previous prime is 1362407. The next prime is 1362421. The reversal of 1362409 is 9042631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1357225 + 5184 = 1165^2 + 72^2 .

It is a cyclic number.

It is not a de Polignac number, because 1362409 - 2¹ = 1362407 is a prime.

Together with 1362407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1362401) 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, 681204 + 681205.

It is an arithmetic number, because the mean of its divisors is an integer number (681205).

2^1362409 is an apocalyptic number.

It is an amenable number.

1362409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1362409 is an equidigital number, since it uses as much as digits as its factorization.

1362409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1362409 is about 1167.2227722247. Note that the first 3 decimals coincide. The cubic root of 1362409 is about 110.8585433950.

It can be divided in two parts, 1362 and 409, that added together give a palindrome (1771).

The spelling of 1362409 in words is "one million, three hundred sixty-two thousand, four hundred nine".