491479 has 4 divisors (see below), whose sum is σ = 501984. Its totient is φ = 480976.

The previous prime is 491461. The next prime is 491483. The reversal of 491479 is 974194.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 491479 - 2⁹ = 490967 is a prime.

It is a Duffinian number.

491479 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491429) 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, 5182 + ... + 5275.

It is an arithmetic number, because the mean of its divisors is an integer number (125496).

2⁴⁹¹⁴⁷⁹ is an apocalyptic number.

491479 is a deficient number, since it is larger than the sum of its proper divisors (10505).

491479 is a wasteful number, since it uses less digits than its factorization.

491479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10504.

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

The square root of 491479 is about 701.0556325999. The cubic root of 491479 is about 78.9165919882.

The spelling of 491479 in words is "four hundred ninety-one thousand, four hundred seventy-nine".