492009 has 12 divisors (see below), whose sum is σ = 763344. Its totient is φ = 281064.

The previous prime is 492007. The next prime is 492013. The reversal of 492009 is 900294.

492009 is nontrivially palindromic in base 15.

492009 is an esthetic number in base 15, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 492009 - 2¹ = 492007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 492009.

It is not an unprimeable number, because it can be changed into a prime (492007) 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, 1527 + ... + 1820.

It is an arithmetic number, because the mean of its divisors is an integer number (63612).

2⁴⁹²⁰⁰⁹ is an apocalyptic number.

492009 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

492009 is a deficient number, since it is larger than the sum of its proper divisors (271335).

492009 is a wasteful number, since it uses less digits than its factorization.

492009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3364 (or 3357 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 492009 is about 701.4335321326. The cubic root of 492009 is about 78.9449490955.

The spelling of 492009 in words is "four hundred ninety-two thousand, nine".