491953 has 8 divisors (see below), whose sum is σ = 613440. Its totient is φ = 383280.

The previous prime is 491951. The next prime is 491969. The reversal of 491953 is 359194.

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

It is a cyclic number.

It is not a de Polignac number, because 491953 - 2¹ = 491951 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3118 + ... + 3271.

It is an arithmetic number, because the mean of its divisors is an integer number (76680).

2⁴⁹¹⁹⁵³ is an apocalyptic number.

It is an amenable number.

491953 is a deficient number, since it is larger than the sum of its proper divisors (121487).

491953 is a wasteful number, since it uses less digits than its factorization.

491953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6407.

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

The square root of 491953 is about 701.3936127454. The cubic root of 491953 is about 78.9419538353.

It can be divided in two parts, 491 and 953, that added together give a square (1444 = 38²).

The spelling of 491953 in words is "four hundred ninety-one thousand, nine hundred fifty-three".