1456809 has 4 divisors (see below), whose sum is σ = 1942416. Its totient is φ = 971204.

The previous prime is 1456799. The next prime is 1456823. The reversal of 1456809 is 9086541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1456809 - 2¹² = 1452713 is a prime.

It is a D-number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1456809.

It is not an unprimeable number, because it can be changed into a prime (1456709) 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, 242799 + ... + 242804.

It is an arithmetic number, because the mean of its divisors is an integer number (485604).

2^1456809 is an apocalyptic number.

It is an amenable number.

1456809 is a deficient number, since it is larger than the sum of its proper divisors (485607).

1456809 is an equidigital number, since it uses as much as digits as its factorization.

1456809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485606.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 1456809 is about 1206.9834298780. The cubic root of 1456809 is about 113.3620102365.

The spelling of 1456809 in words is "one million, four hundred fifty-six thousand, eight hundred nine".