499771 has 4 divisors (see below), whose sum is σ = 501592. Its totient is φ = 497952.

The previous prime is 499747. The next prime is 499781. The reversal of 499771 is 177994.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 177994 = 2 ⋅88997.

It is a cyclic number.

It is not a de Polignac number, because 499771 - 2⁵ = 499739 is a prime.

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 499771.

It is not an unprimeable number, because it can be changed into a prime (499711) 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, 405 + ... + 1078.

It is an arithmetic number, because the mean of its divisors is an integer number (125398).

2⁴⁹⁹⁷⁷¹ is an apocalyptic number.

499771 is a deficient number, since it is larger than the sum of its proper divisors (1821).

499771 is a wasteful number, since it uses less digits than its factorization.

499771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820.

The product of its digits is 15876, while the sum is 37.

The square root of 499771 is about 706.9448351887. The cubic root of 499771 is about 79.3579335867.

The spelling of 499771 in words is "four hundred ninety-nine thousand, seven hundred seventy-one".