491427 has 10 divisors (see below), whose sum is σ = 734228. Its totient is φ = 327564.

The previous prime is 491423. The next prime is 491429. The reversal of 491427 is 724194.

It is a happy number.

It is not a de Polignac number, because 491427 - 2² = 491423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 491427.

It is not an unprimeable number, because it can be changed into a prime (491423) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2953 + ... + 3114.

2⁴⁹¹⁴²⁷ is an apocalyptic number.

491427 is a deficient number, since it is larger than the sum of its proper divisors (242801).

491427 is an equidigital number, since it uses as much as digits as its factorization.

491427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6079 (or 6070 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 491427 is about 701.0185446905. The cubic root of 491427 is about 78.9138086835.

The spelling of 491427 in words is "four hundred ninety-one thousand, four hundred twenty-seven".