1396289 has 4 divisors (see below), whose sum is σ = 1401540. Its totient is φ = 1391040.

The previous prime is 1396273. The next prime is 1396301. The reversal of 1396289 is 9826931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9826931 = 1439 ⋅6829.

It can be written as a sum of positive squares in 2 ways, for example, as 600625 + 795664 = 775^2 + 892^2 .

It is a cyclic number.

It is not a de Polignac number, because 1396289 - 2⁴ = 1396273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1396259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2204 + ... + 2765.

It is an arithmetic number, because the mean of its divisors is an integer number (350385).

2^1396289 is an apocalyptic number.

It is an amenable number.

1396289 is a deficient number, since it is larger than the sum of its proper divisors (5251).

1396289 is an equidigital number, since it uses as much as digits as its factorization.

1396289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5250.

The product of its digits is 23328, while the sum is 38.

The square root of 1396289 is about 1181.6467323189. The cubic root of 1396289 is about 111.7699625848.

The spelling of 1396289 in words is "one million, three hundred ninety-six thousand, two hundred eighty-nine".