1368239 has 4 divisors (see below), whose sum is σ = 1387056. Its totient is φ = 1349424.

The previous prime is 1368233. The next prime is 1368251. The reversal of 1368239 is 9328631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1368239 is a prime.

It is a super-2 number, since 2×1368239² = 3744155922242, 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 (1368233) 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 3 ways as a sum of consecutive naturals, for example, 9299 + ... + 9444.

It is an arithmetic number, because the mean of its divisors is an integer number (346764).

2^1368239 is an apocalyptic number.

1368239 is a deficient number, since it is larger than the sum of its proper divisors (18817).

1368239 is an equidigital number, since it uses as much as digits as its factorization.

1368239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18816.

The product of its digits is 7776, while the sum is 32.

The square root of 1368239 is about 1169.7174872592. The cubic root of 1368239 is about 111.0164464444.

The spelling of 1368239 in words is "one million, three hundred sixty-eight thousand, two hundred thirty-nine".