894409 has 2 divisors, whose sum is σ = 894410. Its totient is φ = 894408.

The previous prime is 894407. The next prime is 894419. The reversal of 894409 is 904498.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 558009 + 336400 = 747^2 + 580^2 .

It is a cyclic number.

It is not a de Polignac number, because 894409 - 2¹ = 894407 is a prime.

Together with 894407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (894403) 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 as a sum of consecutive naturals, namely, 447204 + 447205.

It is an arithmetic number, because the mean of its divisors is an integer number (447205).

2⁸⁹⁴⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

894409 is a deficient number, since it is larger than the sum of its proper divisors (1).

894409 is an equidigital number, since it uses as much as digits as its factorization.

894409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 894409 is about 945.7319916340. The cubic root of 894409 is about 96.3485952068.

The spelling of 894409 in words is "eight hundred ninety-four thousand, four hundred nine".