491437 has 4 divisors (see below), whose sum is σ = 495900. Its totient is φ = 486976.

The previous prime is 491429. The next prime is 491461. The reversal of 491437 is 734194.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 734194 = 2 ⋅367097.

It can be written as a sum of positive squares in 2 ways, for example, as 9801 + 481636 = 99^2 + 694^2 .

It is a cyclic number.

It is not a de Polignac number, because 491437 - 2³ = 491429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491417) 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, 2062 + ... + 2287.

It is an arithmetic number, because the mean of its divisors is an integer number (123975).

2⁴⁹¹⁴³⁷ is an apocalyptic number.

It is an amenable number.

491437 is a deficient number, since it is larger than the sum of its proper divisors (4463).

491437 is a wasteful number, since it uses less digits than its factorization.

491437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4462.

The product of its digits is 3024, while the sum is 28.

The square root of 491437 is about 701.0256771332. The cubic root of 491437 is about 78.9143439496.

The spelling of 491437 in words is "four hundred ninety-one thousand, four hundred thirty-seven".