1368439 has 2 divisors, whose sum is σ = 1368440. Its totient is φ = 1368438.

The previous prime is 1368401. The next prime is 1368443. The reversal of 1368439 is 9348631.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1368439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1368469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684219 + 684220.

It is an arithmetic number, because the mean of its divisors is an integer number (684220).

2^1368439 is an apocalyptic number.

1368439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1368439 is an equidigital number, since it uses as much as digits as its factorization.

1368439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 34.

The square root of 1368439 is about 1169.8029748637. The cubic root of 1368439 is about 111.0218553940.

The spelling of 1368439 in words is "one million, three hundred sixty-eight thousand, four hundred thirty-nine".