1340449 has 8 divisors (see below), whose sum is σ = 1471392. Its totient is φ = 1211040.

The previous prime is 1340447. The next prime is 1340459. The reversal of 1340449 is 9440431.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1340449 - 2¹ = 1340447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2302 + ... + 2824.

It is an arithmetic number, because the mean of its divisors is an integer number (183924).

2^1340449 is an apocalyptic number.

It is an amenable number.

1340449 is a deficient number, since it is larger than the sum of its proper divisors (130943).

1340449 is a wasteful number, since it uses less digits than its factorization.

1340449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1340449 is about 1157.7776124973. Note that the first 3 decimals coincide. The cubic root of 1340449 is about 110.2596894695.

The spelling of 1340449 in words is "one million, three hundred forty thousand, four hundred forty-nine".