1369439 has 4 divisors (see below), whose sum is σ = 1398624. Its totient is φ = 1340256.

The previous prime is 1369429. The next prime is 1369451. The reversal of 1369439 is 9349631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9349631 = 31 ⋅301601.

It is a cyclic number.

It is not a de Polignac number, because 1369439 - 2⁸ = 1369183 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1369399 and 1369408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1369429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14522 + ... + 14615.

It is an arithmetic number, because the mean of its divisors is an integer number (349656).

2^1369439 is an apocalyptic number.

1369439 is a deficient number, since it is larger than the sum of its proper divisors (29185).

1369439 is an equidigital number, since it uses as much as digits as its factorization.

1369439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29184.

The product of its digits is 17496, while the sum is 35.

The square root of 1369439 is about 1170.2303192107. The cubic root of 1369439 is about 111.0488922399.

The spelling of 1369439 in words is "one million, three hundred sixty-nine thousand, four hundred thirty-nine".