492409 has 2 divisors, whose sum is σ = 492410. Its totient is φ = 492408.

The previous prime is 492403. The next prime is 492413. The reversal of 492409 is 904294.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 354025 + 138384 = 595^2 + 372^2 .

It is a cyclic number.

It is not a de Polignac number, because 492409 - 2⁵ = 492377 is a prime.

492409 is a lucky number.

It is a nialpdrome in base 14.

It is not a weakly prime, because it can be changed into another prime (492403) 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, 246204 + 246205.

It is an arithmetic number, because the mean of its divisors is an integer number (246205).

2⁴⁹²⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

492409 is a deficient number, since it is larger than the sum of its proper divisors (1).

492409 is an equidigital number, since it uses as much as digits as its factorization.

492409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 492409 is about 701.7186045702. The cubic root of 492409 is about 78.9663372042.

The spelling of 492409 in words is "four hundred ninety-two thousand, four hundred nine".