1392449 has 2 divisors, whose sum is σ = 1392450. Its totient is φ = 1392448.

The previous prime is 1392431. The next prime is 1392451. The reversal of 1392449 is 9442931.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1392400 + 49 = 1180^2 + 7^2 .

It is an emirp because it is prime and its reverse (9442931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1392449 - 2¹² = 1388353 is a prime.

Together with 1392451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1392649) 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 as a sum of consecutive naturals, namely, 696224 + 696225.

It is an arithmetic number, because the mean of its divisors is an integer number (696225).

2^1392449 is an apocalyptic number.

It is an amenable number.

1392449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1392449 is an equidigital number, since it uses as much as digits as its factorization.

1392449 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1392449 is about 1180.0207625292. The cubic root of 1392449 is about 111.6674072375.

It can be divided in two parts, 13924 and 49, that multiplied together give a square (682276 = 826²).

The spelling of 1392449 in words is "one million, three hundred ninety-two thousand, four hundred forty-nine".