1424609 has 4 divisors (see below), whose sum is σ = 1431060. Its totient is φ = 1418160.

The previous prime is 1424603. The next prime is 1424659. The reversal of 1424609 is 9064241.

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 664225 + 760384 = 815^2 + 872^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1424609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1424603) 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, 2882 + ... + 3339.

It is an arithmetic number, because the mean of its divisors is an integer number (357765).

2^1424609 is an apocalyptic number.

It is an amenable number.

1424609 is a deficient number, since it is larger than the sum of its proper divisors (6451).

1424609 is an equidigital number, since it uses as much as digits as its factorization.

1424609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6450.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1424609 is about 1193.5698555175. The cubic root of 1424609 is about 112.5205624965.

The spelling of 1424609 in words is "one million, four hundred twenty-four thousand, six hundred nine".