1320449 has 4 divisors (see below), whose sum is σ = 1422036. Its totient is φ = 1218864.

The previous prime is 1320437. The next prime is 1320533. The reversal of 1320449 is 9440231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9440231 = 71 ⋅132961.

It can be written as a sum of positive squares in 2 ways, for example, as 446224 + 874225 = 668^2 + 935^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320449 - 2⁴ = 1320433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320409) 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, 50774 + ... + 50799.

It is an arithmetic number, because the mean of its divisors is an integer number (355509).

2^1320449 is an apocalyptic number.

It is an amenable number.

1320449 is a deficient number, since it is larger than the sum of its proper divisors (101587).

1320449 is a wasteful number, since it uses less digits than its factorization.

1320449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101586.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1320449 is about 1149.1079148627. The cubic root of 1320449 is about 109.7085674071.

The spelling of 1320449 in words is "one million, three hundred twenty thousand, four hundred forty-nine".