1456409 has 4 divisors (see below), whose sum is σ = 1506660. Its totient is φ = 1406160.

The previous prime is 1456393. The next prime is 1456417. The reversal of 1456409 is 9046541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 462400 + 994009 = 680^2 + 997^2 .

It is a cyclic number.

It is not a de Polignac number, because 1456409 - 2⁴ = 1456393 is a prime.

It is a super-2 number, since 2×1456409² = 4242254350562, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 50221 = 1456409 / (1 + 4 + 5 + 6 + 4 + 0 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1456439) 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, 25082 + ... + 25139.

It is an arithmetic number, because the mean of its divisors is an integer number (376665).

2^1456409 is an apocalyptic number.

It is an amenable number.

1456409 is a deficient number, since it is larger than the sum of its proper divisors (50251).

1456409 is an equidigital number, since it uses as much as digits as its factorization.

1456409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50250.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1456409 is about 1206.8177161444. The cubic root of 1456409 is about 113.3516339152.

The spelling of 1456409 in words is "one million, four hundred fifty-six thousand, four hundred nine".