1366469 has 8 divisors (see below), whose sum is σ = 1480920. Its totient is φ = 1253376.

The previous prime is 1366459. The next prime is 1366471. The reversal of 1366469 is 9646631.

1366469 is nontrivially palindromic in base 4.

It can be written as a sum of positive squares in 4 ways, for example, as 664225 + 702244 = 815^2 + 838^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1366469 - 2⁸ = 1366213 is a prime.

It is a super-2 number, since 2×1366469² = 3734475055922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366459) 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 in 7 ways as a sum of consecutive naturals, for example, 3137 + ... + 3545.

It is an arithmetic number, because the mean of its divisors is an integer number (185115).

2^1366469 is an apocalyptic number.

It is an amenable number.

1366469 is a deficient number, since it is larger than the sum of its proper divisors (114451).

1366469 is a wasteful number, since it uses less digits than its factorization.

1366469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679.

The product of its digits is 23328, while the sum is 35.

The square root of 1366469 is about 1168.9606494660. The cubic root of 1366469 is about 110.9685542502.

The spelling of 1366469 in words is "one million, three hundred sixty-six thousand, four hundred sixty-nine".