491974 has 8 divisors (see below), whose sum is σ = 843408. Its totient is φ = 210840.

The previous prime is 491969. The next prime is 491977. The reversal of 491974 is 479194.

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

It is an Ulam number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17557 + ... + 17584.

It is an arithmetic number, because the mean of its divisors is an integer number (105426).

2⁴⁹¹⁹⁷⁴ is an apocalyptic number.

491974 is a deficient number, since it is larger than the sum of its proper divisors (351434).

491974 is a wasteful number, since it uses less digits than its factorization.

491974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35150.

The product of its digits is 9072, while the sum is 34.

The square root of 491974 is about 701.4085827818. The cubic root of 491974 is about 78.9430770845.

The spelling of 491974 in words is "four hundred ninety-one thousand, nine hundred seventy-four".