492981 has 8 divisors (see below), whose sum is σ = 664224. Its totient is φ = 325200.

The previous prime is 492979. The next prime is 493001. The reversal of 492981 is 189294.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 492981 - 2¹ = 492979 is a prime.

It is a super-2 number, since 2×492981² = 486060532722, which contains 22 as substring.

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 (492901) 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 in 7 ways as a sum of consecutive naturals, for example, 511 + ... + 1116.

It is an arithmetic number, because the mean of its divisors is an integer number (83028).

2⁴⁹²⁹⁸¹ is an apocalyptic number.

It is an amenable number.

492981 is a deficient number, since it is larger than the sum of its proper divisors (171243).

492981 is a wasteful number, since it uses less digits than its factorization.

492981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731.

The product of its digits is 5184, while the sum is 33.

The square root of 492981 is about 702.1260570581. The cubic root of 492981 is about 78.9969020844.

The spelling of 492981 in words is "four hundred ninety-two thousand, nine hundred eighty-one".