492309 has 12 divisors (see below), whose sum is σ = 748800. Its totient is φ = 310824.

The previous prime is 492299. The next prime is 492319. The reversal of 492309 is 903294.

It is an interprime number because it is at equal distance from previous prime (492299) and next prime (492319).

It is not a de Polignac number, because 492309 - 2⁴ = 492293 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (492319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1269 + ... + 1610.

It is an arithmetic number, because the mean of its divisors is an integer number (62400).

2⁴⁹²³⁰⁹ is an apocalyptic number.

It is an amenable number.

492309 is a deficient number, since it is larger than the sum of its proper divisors (256491).

492309 is a wasteful number, since it uses less digits than its factorization.

492309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904 (or 2901 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 492309 is about 701.6473473192. The cubic root of 492309 is about 78.9609912632.

The spelling of 492309 in words is "four hundred ninety-two thousand, three hundred nine".