491935 has 4 divisors (see below), whose sum is σ = 590328. Its totient is φ = 393544.

The previous prime is 491923. The next prime is 491951. The reversal of 491935 is 539194.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 539194 = 2 ⋅269597.

It is a cyclic number.

It is not a de Polignac number, because 491935 - 2⁹ = 491423 is a prime.

It is an Ulam number.

It is a Duffinian number.

491935 is a lucky number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 491897 and 491906.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 49189 + ... + 49198.

It is an arithmetic number, because the mean of its divisors is an integer number (147582).

2⁴⁹¹⁹³⁵ is an apocalyptic number.

491935 is a deficient number, since it is larger than the sum of its proper divisors (98393).

491935 is an equidigital number, since it uses as much as digits as its factorization.

491935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98392.

The product of its digits is 4860, while the sum is 31.

The square root of 491935 is about 701.3807810312. The cubic root of 491935 is about 78.9409910248.

The spelling of 491935 in words is "four hundred ninety-one thousand, nine hundred thirty-five".