1461409 has 2 divisors, whose sum is σ = 1461410. Its totient is φ = 1461408.

The previous prime is 1461407. The next prime is 1461413. The reversal of 1461409 is 9041641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1134225 + 327184 = 1065^2 + 572^2 .

It is a cyclic number.

It is not a de Polignac number, because 1461409 - 2¹ = 1461407 is a prime.

Together with 1461407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1461401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 730704 + 730705.

It is an arithmetic number, because the mean of its divisors is an integer number (730705).

2^1461409 is an apocalyptic number.

It is an amenable number.

1461409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1461409 is an equidigital number, since it uses as much as digits as its factorization.

1461409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1461409 is about 1208.8875051054. The cubic root of 1461409 is about 113.4812016452.

The spelling of 1461409 in words is "one million, four hundred sixty-one thousand, four hundred nine".